<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>2.0</version>
  <creation_date>2012-05-31 10:25:43 -0600</creation_date>
  <update_date>2015-09-13 12:56:07 -0600</update_date>
  <accession>ECMDB00290</accession>
  <m2m_id>M2MDB000120</m2m_id>
  <name>Uridine diphosphate-N-acetylglucosamine</name>
  <description>Uridine diphosphate N-acetylglucosamine or UDP-GlcNAc is a nucleotide sugar and a coenzyme in metabolism. It is used by glycosyltransferases to transfer N-acetylglucosamine residues to substrates. D-Glucosamine is made naturally in the form of glucosamine-6-phosphate, and is the biochemical precursor of all nitrogen-containing sugars. Specifically, glucosamine-6-phosphate is synthesized from fructose 6-phosphate and glutamine as the first step of the hexosamine biosynthesis pathway.  The end-product of this pathway is UDP-GlcNAc, which is then used for making glycosaminoglycans, proteoglycans, and glycolipids.</description>
  <synonyms>
    <synonym>N-[2-[[[5-[(2,4-Dioxo-1H-pyrimidin-1-yl)]-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphinoyl]oxy-hydroxy-phosphinoyl]oxy-4,5-dihydroxy-6-(hydroxymethyl)tetrahydropyran-3-yl]acetamide</synonym>
    <synonym>UDP-&amp;alpha;-&lt;i&gt;N&lt;/i&gt;-acetyl-D-glucosamine</synonym>
    <synonym>UDP-&amp;alpha;-n-acetyl-D-glucosamine</synonym>
    <synonym>UDP-2-acetamido-2-deoxy-&amp;alpha;-D-glucose</synonym>
    <synonym>UDP-2-acetamido-2-Deoxy-a-D-glucose</synonym>
    <synonym>UDP-2-Acetamido-2-deoxy-alpha-D-glucose</synonym>
    <synonym>UDP-2-acetamido-2-Deoxy-α-D-glucose</synonym>
    <synonym>UDP-&lt;i&gt;N&lt;/i&gt;-acetyl-D-glucosamine</synonym>
    <synonym>UDP-&lt;i&gt;N&lt;/i&gt;-acetyl-glucosamine</synonym>
    <synonym>UDP-a-D-N-Acetylglucosamine</synonym>
    <synonym>UDP-a-delta-N-Acetylglucosamine</synonym>
    <synonym>UDP-a-N-Acetyl-D-glucosamine</synonym>
    <synonym>UDP-a-δ-N-Acetylglucosamine</synonym>
    <synonym>UDP-Acetyl-D-glucosamine</synonym>
    <synonym>UDP-Acetyl-delta-glucosamine</synonym>
    <synonym>UDP-Acetyl-δ-glucosamine</synonym>
    <synonym>UDP-Acetylglucosamine</synonym>
    <synonym>UDP-alpha-D-N-Acetylglucosamine</synonym>
    <synonym>UDP-alpha-delta-N-Acetylglucosamine</synonym>
    <synonym>UDP-alpha-N-Acetyl-D-glucosamine</synonym>
    <synonym>UDP-GlcNAc</synonym>
    <synonym>UDP-N-Acetyl-D-glucosamine</synonym>
    <synonym>UDP-N-Acetyl-delta-glucosamine</synonym>
    <synonym>UDP-N-Acetyl-glucosamine</synonym>
    <synonym>UDP-N-Acetyl-δ-glucosamine</synonym>
    <synonym>UDP-N-Acetylglucosamine</synonym>
    <synonym>UDP-α-D-N-Acetylglucosamine</synonym>
    <synonym>UDP-α-N-Acetyl-D-glucosamine</synonym>
    <synonym>UDP-α-δ-N-Acetylglucosamine</synonym>
    <synonym>UPPAG</synonym>
    <synonym>Uridine 5'-Diphospho-N-Acetlyglucosamine</synonym>
    <synonym>Uridine 5'-diphospho-N-acetylglucosamine</synonym>
    <synonym>Uridine diphosphate &lt;i&gt;N&lt;/i&gt;-acetylglucosamine</synonym>
    <synonym>Uridine diphosphate N-acetyl-D-glucosamine</synonym>
    <synonym>Uridine diphosphate N-acetyl-delta-glucosamine</synonym>
    <synonym>Uridine diphosphate N-acetyl-δ-glucosamine</synonym>
    <synonym>Uridine diphosphate N-acetylglucosamine</synonym>
    <synonym>Uridine diphospho-2-acetamido-2-deoxy-D-glucose</synonym>
    <synonym>Uridine diphospho-2-acetamido-2-deoxy-delta-glucose</synonym>
    <synonym>Uridine diphospho-2-acetamido-2-deoxy-δ-glucose</synonym>
    <synonym>Uridine diphospho-N-acetyl-D-glucosamine</synonym>
    <synonym>Uridine diphospho-N-acetyl-delta-glucosamine</synonym>
    <synonym>Uridine diphospho-N-acetyl-δ-glucosamine</synonym>
    <synonym>Uridine diphospho-N-acetylglucosamine</synonym>
    <synonym>Uridine diphosphoacetylglucosamine</synonym>
    <synonym>Uridine diphosphoric acid N-acetyl-D-glucosamine</synonym>
    <synonym>Uridine diphosphoric acid N-acetyl-delta-glucosamine</synonym>
    <synonym>Uridine diphosphoric acid N-acetyl-δ-glucosamine</synonym>
    <synonym>Uridine diphosphoric acid n-acetylglucosamine</synonym>
    <synonym>Uridine diphosphoric acid N-acetylglucosamine</synonym>
    <synonym>Uridine diphosphoric acid-N-acetylglucosamine</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-a-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-a-delta-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-a-δ-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-alpha-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-alpha-delta-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-α-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphate 2-acetamido-2-deoxy-α-δ-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoacetylglucosamine</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-a-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-a-delta-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-a-δ-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-alpha-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-alpha-delta-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-α-D-glucopyranosyl ester</synonym>
    <synonym>Uridine pyrophosphoric acid 2-acetamido-2-deoxy-α-δ-glucopyranosyl ester</synonym>
    <synonym>[[3-acetylamino-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-hydroxy-phosphoryl]oxy-[[5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy]phosphinate</synonym>
    <synonym>[[3-acetylamino-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-hydroxy-phosphoryl]oxy-[[5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxy-oxolan-2-yl]methoxy]phosphinic acid</synonym>
  </synonyms>
  <chemical_formula>C17H27N3O17P2</chemical_formula>
  <average_molecular_weight>607.3537</average_molecular_weight>
  <monisotopic_moleculate_weight>607.081569477</monisotopic_moleculate_weight>
  <iupac_name>[({[(2R,3S,4R,5R)-5-(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy]({[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy})phosphinic acid</iupac_name>
  <traditional_iupac>udp-N-acetyl-α-D-glucosamine</traditional_iupac>
  <cas_registry_number>528-04-1</cas_registry_number>
  <smiles>CC(=O)N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1OP(O)(=O)OP(O)(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)N1C=CC(=O)NC1=O</smiles>
  <inchi>InChI=1S/C17H27N3O17P2/c1-6(22)18-10-13(26)11(24)7(4-21)35-16(10)36-39(31,32)37-38(29,30)33-5-8-12(25)14(27)15(34-8)20-3-2-9(23)19-17(20)28/h2-3,7-8,10-16,21,24-27H,4-5H2,1H3,(H,18,22)(H,29,30)(H,31,32)(H,19,23,28)/t7-,8-,10-,11-,12-,13-,14-,15-,16-/m1/s1</inchi>
  <inchikey>LFTYTUAZOPRMMI-CFRASDGPSA-N</inchikey>
  <state>Solid</state>
  <cellular_locations>
    <cellular_location>Cytosol</cellular_location>
    <cellular_location>Extra-organism</cellular_location>
    <cellular_location>Periplasm</cellular_location>
  </cellular_locations>
  <predicted_properties>
    <property>
      <kind>logp</kind>
      <value>-1.41</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-1.72</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>1.14e+01 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>-5.3</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>1.74</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>-3.5</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>[({[(2R,3S,4R,5R)-5-(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}(hydroxy)phosphoryl)oxy]({[(2R,3R,4R,5S,6R)-3-acetamido-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy})phosphinic acid</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>607.3537</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>607.081569477</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>CC(=O)N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1OP(O)(=O)OP(O)(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)N1C=CC(=O)NC1=O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C17H27N3O17P2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C17H27N3O17P2/c1-6(22)18-10-13(26)11(24)7(4-21)35-16(10)36-39(31,32)37-38(29,30)33-5-8-12(25)14(27)15(34-8)20-3-2-9(23)19-17(20)28/h2-3,7-8,10-16,21,24-27H,4-5H2,1H3,(H,18,22)(H,29,30)(H,31,32)(H,19,23,28)/t7-,8-,10-,11-,12-,13-,14-,15-,16-/m1/s1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>LFTYTUAZOPRMMI-CFRASDGPSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>300.41</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>117.56</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>50.39</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>10</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>14</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>donor_count</kind>
    <value>9</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>physiological_charge</kind>
    <value>-2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formal_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <pathways>
    <pathway>
      <name>Amino sugar and nucleotide sugar metabolism</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00520</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Peptidoglycan biosynthesis</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00550</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Lipopolysaccharide biosynthesis</name>
      <description>E. coli lipid A is synthesized on the cytoplasmic surface of the inner membrane. The pathway can start from the fructose 6-phosphate that is either produced in the glycolysis and pyruvate dehydrogenase or be obtained from the interaction with D-fructose interacting with a mannose PTS permease. Fructose 6-phosphate interacts with L-glutamine through a D-fructose-6-phosphate aminotransferase resulting into a L-glutamic acid and a glucosamine 6-phosphate. The latter compound is isomerized through a phosphoglucosamine mutase resulting a glucosamine 1-phosphate. This compound is acetylated, interacting with acetyl-CoA through a bifunctional protein glmU resulting in a Coenzyme A, hydrogen ion and N-acetyl-glucosamine 1-phosphate. This compound interact with UTP and hydrogen ion through the bifunctional protein glmU resulting in a pyrophosphate and a UDP-N-acetylglucosamine. This compound interacts with (3R)-3-hydroxymyristoyl-[acp] through an UDP-N-acetylglucosamine acyltransferase resulting in a holo-[acp] and a UDP-3-O[(3R)-3-hydroxymyristoyl]-N-acetyl-alpha-D-glucosamine. This compound interacts with water through UDP-3-O-acyl-N-acetylglucosamine deacetylase resulting in an acetic acid and UDP-3-O-(3-hydroxymyristoyl)-α-D-glucosamine. The latter compound interacts with (3R)-3-hydroxymyristoyl-[acp] through 
UDP-3-O-(R-3-hydroxymyristoyl)-glucosamine N-acyltransferase releasing a hydrogen ion, a holo-acp and UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine. The latter compound is hydrolase by interacting with water and a UDP-2,3-diacylglucosamine hydrolase resulting in UMP, hydrogen ion and  2,3-bis[(3R)-3-hydroxymyristoyl]-α-D-glucosaminyl 1-phosphate. This last compound then interacts with a UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine through a lipid A disaccharide synthase resulting in a release of UDP, hydrogen ion and a lipid A disaccharide.  The lipid A disaccharide is phosphorylated by an ATP mediated 
tetraacyldisaccharide 4'-kinase resulting in the release of hydrogen ion and lipid IVA. 
 A D-ribulose 5-phosphate is isomerized with D-arabinose 5-phosphate isomerase 2  to result in a D-arabinose 5-phosphate. This compounds interacts with water and phosphoenolpyruvic acid through a 3-deoxy-D-manno-octulosonate 8-phosphate synthase resulting in the release of phosphate and  3-deoxy-D-manno-octulosonate 8-phosphate. This compound interacts with water through a 3-deoxy-D-manno-octulosonate 8-phosphate phosphatase thus releasing a phosphate and a 3-deoxy-D-manno-octulosonate. The latter compound interacts with CTP through a 3-deoxy-D-manno-octulosonate cytidylyltransferase resulting in a pyrophosphate and 
CMP-3-deoxy-α-D-manno-octulosonate.

CMP-3-deoxy-α-D-manno-octulosonate and lipid IVA interact with each other through a KDO transferase resulting in CMP, hydrogen ion and alpha-Kdo-(2--&gt;6)-lipid IVA. The latter compound reacts with CMP-3-deoxy-α-D-manno-octulosonate through a KDO transferase resulting in a CMP, hydrogen ion, and a a-Kdo-(2-&gt;4)-a-Kdo-(2-&gt;6)-lipid IVA. The latter compound interacts with a dodecanoyl-[acp] lauroyl acyltransferase resulting in a holo-[acp] and a (KDO)2-(lauroyl)-lipid IVA. The latter compound reacts with a myristoyl-[acp] through a myristoyl-acyl carrier protein (ACP)-dependent acyltransferase resulting in a holo-[acp], (KDO)2-lipid A. The latter compound reacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase I resulting hydrogen ion, ADP, heptosyl-KDO2-lipid A. The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase II resulting in ADP, hydrogen ion and (heptosyl)2-Kdo2-lipid A. The latter compound UDP-glucose interacts with (heptosyl)2-Kdo2-lipid A resulting in UDP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A. Glucosyl-(heptosyl)2-Kdo2-lipid A (Escherichia coli) is phosphorylated through an ATP-mediated lipopolysaccharide core heptose (I) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A-phosphate.
The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through a lipopolysaccharide core heptosyl transferase III resulting in ADP, hydrogen ion, and  glucosyl-(heptosyl)3-Kdo2-lipid A-phosphate. The latter compound is phosphorylated through an ATP-driven lipopolysaccharide core heptose (II) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-alpha-D-galactose through a UDP-D-galactose:(glucosyl)lipopolysaccharide-1,6-D-galactosyltransferase resulting in a UDP, a hydrogen ion and a galactosyl-glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-glucose through a (glucosyl)LPS α-1,3-glucosyltransferase resulting in a hydrogen ion, a UDP and galactosyl-(glucosyl)2-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with UDP-glucose through a UDP-glucose:(glucosyl)LPS α-1,2-glucosyltransferase resulting in UDP, a hydrogen ion and galactosyl-(glucosyl)3-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with ADP-L-glycero-beta-D-manno-heptose  through a lipopolysaccharide core biosynthesis; heptosyl transferase IV; probably hexose transferase resulting in a Lipid A-core.
A lipid A-core is then exported into the periplasmic space by a lipopolysaccharide ABC transporter.

The lipid A-core is then flipped to the outer surface of the inner membrane by the ATP-binding cassette (ABC) transporter, MsbA. An additional integral membrane protein, YhjD, has recently been implicated in LPS export across the IM. The smallest LPS derivative that supports viability in E. coli is lipid IVA. However, it requires mutations in either MsbA or YhjD, to suppress the normally lethal consequence of an incomplete lipid A . Recent studies with deletion mutants implicate the periplasmic protein LptA, the cytosolic protein LptB, and the IM proteins LptC, LptF, and LptG in the subsequent transport of nascent LPS to the outer membrane (OM), where the LptD/LptE complex flips LPS to the outer surface. </description>
      <pathwhiz_id>PW000831</pathwhiz_id>
      <kegg_map_id>ec00540</kegg_map_id>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Metabolic pathways</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>eco01100</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Amino sugar and nucleotide sugar metabolism I</name>
      <description>The synthesis of amino sugars and nucleotide sugars  starts with the phosphorylation of N-Acetylmuramic acid (MurNac) through its transport from the periplasmic space to the cytoplasm. Once in the cytoplasm, MurNac and water undergo a reversible reaction through a N-acetylmuramic acid 6-phosphate etherase, producing a D-lactic acid and N-Acetyl-D-Glucosamine 6-phosphate. This latter compound can also be introduced into the cytoplasm through a phosphorylating PTS permase in the inner membrane that allows for the transport of N-Acetyl-D-glucosamine from the periplasmic space.  N-Acetyl-D-Glucosamine 6-phosphate can also be obtained from chitin dependent reactions. Chitin is hydrated through a bifunctional chitinase to produce chitobiose. This in turn gets hydrated by a beta-hexosaminidase to produce N-acetyl-D-glucosamine. The latter undergoes an atp dependent phosphorylation leading to the production of N-Acetyl-D-Glucosamine 6-phosphate.
 N-Acetyl-D-Glucosamine 6-phosphate is then be deacetylated in order to produce Glucosamine 6-phosphate through a N-acetylglucosamine-6-phosphate deacetylase. This compound can either be isomerized  or deaminated into Beta-D-fructofuranose 6-phosphate through a glucosamine-fructose-6-phosphate aminotransferase and a glucosamine-6-phosphate deaminase respectively. 
Glucosamine 6-phosphate undergoes a reversible reaction to glucosamine 1 phosphate through a phosphoglucosamine mutase. This compound is then acetylated through a bifunctional protein glmU to produce a N-Acetyl glucosamine 1-phosphate. 
N-Acetyl glucosamine 1-phosphate enters the nucleotide sugar synthesis by reacting with UTP and hydrogen ion through a bifunctional protein glmU releasing pyrophosphate and a Uridine diphosphate-N-acetylglucosamine.This compound can either be isomerized into a  UDP-N-acetyl-D-mannosamine or undergo a reaction with phosphoenolpyruvic acid through UDP-N-acetylglucosamine 1-carboxyvinyltransferase releasing a phosphate and a UDP-N-Acetyl-alpha-D-glucosamine-enolpyruvate.
UDP-N-acetyl-D-mannosamine undergoes a NAD dependent dehydrogenation  through a UDP-N-acetyl-D-mannosamine dehydrogenase, releasing NADH, a hydrogen ion and a UDP-N-Acetyl-alpha-D-mannosaminuronate, This compound is then used in the production of enterobacterial common antigens. 
UDP-N-Acetyl-alpha-D-glucosamine-enolpyruvate is reduced through a NADPH dependent UDP-N-acetylenolpyruvoylglucosamine reductase, releasing a NADP and a UDP-N-acetyl-alpha-D-muramate. This compound is involved in the D-glutamine and D-glutamate metabolism.
</description>
      <pathwhiz_id>PW000886</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Secondary Metabolites: enterobacterial common antigen biosynthesis</name>
      <description>
 The biosynthesis of a enterobacterial common antigen can begin with a di-trans,octa-cis-undecaprenyl phosphate interacts with a Uridine diphosphate-N-acetylglucosamine through undecaprenyl-phosphate α-N-acetylglucosaminyl transferase resulting in a N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol and a Uridine 5'-monophosphate. The N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol then reacts with an UDP-ManNAcA from the Amino sugar and nucleotide sugar metabolism pathway. This reaction is metabolized by a UDP-N-acetyl-D-mannosaminuronic acid transferase resulting in a uridine 5' diphosphate, a hydrogen ion and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. 

Glucose 1 phosphate can be metabolize by interacting with a hydrogen ion and a thymidine 5-triphosphate by either reacting with a dTDP-glucose pyrophosphorylase or a dTDP-glucose pyrophosphorylase 2 resulting in the release of a pyrophosphate and a dTDP-D-glucose. The latter compound is then dehydrated through an dTDP-glucose 4,6-dehydratase 2 resulting in water and dTDP-4-dehydro-6-deoxy-D-glucose. The latter compound interacts with L-glutamic acid through a dTDP-4-dehydro-6-deoxy-D-glucose transaminase resulting in the release of oxoglutaric acid and dTDP-thomosamine. The latter compound interacts with acetyl-coa through a dTDP-fucosamine acetyltransferase resulting in a Coenzyme A, a hydrogen Ion and a TDP-Fuc4NAc.

Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate then interacts with a TDP--Fuc4NAc through a 4-acetamido-4,6-dideoxy-D-galactose transferase resulting in a hydrogen ion, a dTDP and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. This compound is then transported through a protein wzxE into the periplasmic space so that it can be incorporated into the outer membrane

Enterobacterial common antigen (ECA) is an outer membrane glycolipid common to all members of Enterobacteriaceae. ECA is a unique cell surface antigen that can be found in the outer leaflet of the outer membrane. The carbohydrate portion consists of N-acetyl-glucosamine, N-acetyl-D-mannosaminuronic acid and 4-acetamido-4,6-dideoxy-D-galactose. These amino sugars form trisaccharide repeat units which are part of linear heteropolysaccharide chains.</description>
      <pathwhiz_id>PW000959</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>peptidoglycan biosynthesis I</name>
      <description>Peptidoglycan is a net-like polymer which surrounds the cytoplasmic membrane of most bacteria and functions to maintain cell shape and prevent rupture due to the internal turgor.In E. coli K-12, the peptidoglycan consists of glycan strands of alternating subunits of N-acetylglucosamine (GlcNAc) and N-acetylmuramic acid (MurNAc) which are cross-linked by short peptides. The pathway for constructing this net involves two cell compartments: cytoplasm and periplasmic space. 
The pathway starts with a beta-D-fructofuranose going through a mannose  PTS permease, phosphorylating the compund and producing a beta-D-fructofuranose 6 phosphate. This compound can be obtained from the glycolysis and pyruvate dehydrogenase or from an isomerization reaction of Beta-D-glucose 6-phosphate through a glucose-6-phosphate isomerase.The compound Beta-D-fructofuranose 6 phosphate and L-Glutamine react with a glucosamine fructose-6-phosphate aminotransferase, thus producing a glucosamine 6-phosphate  and a l-glutamic acid. The glucosamine 6-phosphate interacts with phosphoglucosamine mutase in a reversible reaction producing glucosamine-1P. Glucosamine-1p and acetyl coa undergo acetylation throuhg a bifunctional protein glmU releasing Coa and a hydrogen ion and producing a N-acetyl-glucosamine 1-phosphate. Glmu, being a bifunctional protein, follows catalyze the interaction of N-acetyl-glucosamine 1-phosphate, hydrogen ion and UTP into UDP-N-acetylglucosamine and pyrophosphate. UDP-N-acetylglucosamine then interacts with phosphoenolpyruvic acid and a UDP-N acetylglucosamine 1- carboxyvinyltransferase realeasing a phosphate and the compound UDP-N-acetyl-alpha-D-glucosamine-enolpyruvate. This compound undergoes a NADPH dependent reduction producing a UDP-N-acetyl-alpha-D-muramate through a UDP-N-acetylenolpyruvoylglucosamine reductase. UDP-N-acetyl-alpha-D-muramate and L-alanine react in an ATP-mediated ligation through a UDP-N-acetylmuramate-alanine ligase releasing an ADP, hydrogen ion, a phosphate and a UDP-N-acetylmuramoyl-L-alanine. This compound interacts with D-glutamic acid and ATP through  UDP-N-acetylmuramoylalanine-D-glutamate ligase releasing ADP, A phosphate and UDP-N-acetylmuramoyl-L-alanyl-D-glutamate. The latter compound then interacts with meso-diaminopimelate in an ATP mediated ligation through a UDP-N-acetylmuramoylalanine-D-glutamate-2,6-diaminopimelate ligase resulting in ADP, phosphate, hydrogen ion and UDP-N-Acetylmuramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminopimelate. This compound in turn with D-alanyl-D-alanine react in an ATP-mediated ligation through UDP-N-Acetylmuramoyl-tripeptide-D-alanyl-D-alanine ligase to produce UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gama-D-glutamyl-meso-2,6-diaminopimeloyl-Dalanyl-D-alanine and hydrogen ion, ADP, phosphate. UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gama-D-glutamyl-meso-2,6-diaminopimeloyl-Dalanyl-D-alanine interacts with di-trans,octa-cis-undecaprenyl phosphate through a phospho-N-acetylmuramoyl-pentapeptide-transferase, resulting in UMP and Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine which in turn reacts with a UDP-N-acetylglucosamine through a N-acetylglucosaminyl transferase to produce a hydrogen, UDP and ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-gamma-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine. This compound ends the cytoplasmic part of the pathway. ditrans,octacis-undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-gamma-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine is transported through a lipi II flippase. Once in the periplasmic space, the compound reacts with a penicillin binding protein 1A prodducing a peptidoglycan dimer, a hydrogen ion, and UDP. The peptidoglycan dimer then reacts with a penicillin binding protein 1B  producing a peptidoglycan with D,D, cross-links and a D-alanine. 
</description>
      <pathwhiz_id>PW000906</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>lipopolysaccharide biosynthesis II</name>
      <description>E. coli lipid A is synthesized on the cytoplasmic surface of the inner membrane. The pathway can start from the fructose 6-phosphate that is either produced in the glycolysis and pyruvate dehydrogenase or be obtained from the interaction with D-fructose interacting with a mannose PTS permease. Fructose 6-phosphate interacts with L-glutamine through a D-fructose-6-phosphate aminotransferase resulting into a L-glutamic acid and a glucosamine 6-phosphate. The latter compound is isomerized through a phosphoglucosamine mutase resulting a glucosamine 1-phosphate. This compound is acetylated, interacting with acetyl-CoA through a bifunctional protein glmU resulting in a Coenzyme A, hydrogen ion and N-acetyl-glucosamine 1-phosphate. This compound interact with UTP and hydrogen ion through the bifunctional protein glmU resulting in a pyrophosphate and a UDP-N-acetylglucosamine. This compound interacts with (3R)-3-hydroxymyristoyl-[acp] through an UDP-N-acetylglucosamine acyltransferase resulting in a holo-[acp] and a UDP-3-O[(3R)-3-hydroxymyristoyl]-N-acetyl-alpha-D-glucosamine. This compound interacts with water through UDP-3-O-acyl-N-acetylglucosamine deacetylase resulting in an acetic acid and UDP-3-O-(3-hydroxymyristoyl)-α-D-glucosamine. The latter compound interacts with (3R)-3-hydroxymyristoyl-[acp] through UDP-3-O-(R-3-hydroxymyristoyl)-glucosamine N-acyltransferase releasing a hydrogen ion, a holo-acp and UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine. The latter compound is hydrolase by interacting with water and a UDP-2,3-diacylglucosamine hydrolase resulting in UMP, hydrogen ion and 2,3-bis[(3R)-3-hydroxymyristoyl]-α-D-glucosaminyl 1-phosphate. This last compound then interacts with a UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine through a lipid A disaccharide synthase resulting in a release of UDP, hydrogen ion and a lipid A disaccharide. The lipid A disaccharide is phosphorylated by an ATP mediated tetraacyldisaccharide 4'-kinase resulting in the release of hydrogen ion and lipid IVA. A D-ribulose 5-phosphate is isomerized with D-arabinose 5-phosphate isomerase 2 to result in a D-arabinose 5-phosphate. This compounds interacts with water and phosphoenolpyruvic acid through a 3-deoxy-D-manno-octulosonate 8-phosphate synthase resulting in the release of phosphate and 3-deoxy-D-manno-octulosonate 8-phosphate. This compound interacts with water through a 3-deoxy-D-manno-octulosonate 8-phosphate phosphatase thus releasing a phosphate and a 3-deoxy-D-manno-octulosonate. The latter compound interacts with CTP through a 3-deoxy-D-manno-octulosonate cytidylyltransferase resulting in a pyrophosphate and CMP-3-deoxy-α-D-manno-octulosonate. CMP-3-deoxy-α-D-manno-octulosonate and lipid IVA interact with each other through a KDO transferase resulting in CMP, hydrogen ion and alpha-Kdo-(2--&gt;6)-lipid IVA. The latter compound reacts with CMP-3-deoxy-α-D-manno-octulosonate through a KDO transferase resulting in a CMP, hydrogen ion, and a a-Kdo-(2-&gt;4)-a-Kdo-(2-&gt;6)-lipid IVA. The latter compound can either interact with a phosphoethanolamine resulting in a 1,2-diacyl-sn-glycerol and a phosphoethanolamine-Kdo2-lipid A which can be exported outside the cell, or it can interact with a dodecanoyl-[acp] lauroyl acyltransferase resulting in a holo-[acp] and a (KDO)2-(lauroyl)-lipid IVA. The latter compound reacts with a myristoyl-[acp] through a myristoyl-acyl carrier protein (ACP)-dependent acyltransferase resulting in a holo-[acp], (KDO)2-lipid A. The latter compound reacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase I resulting hydrogen ion, ADP, heptosyl-KDO2-lipid A. The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase II resulting in ADP, hydrogen ion and (heptosyl)2-Kdo2-lipid A. The latter compound UDP-glucose interacts with (heptosyl)2-Kdo2-lipid A resulting in UDP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A. Glucosyl-(heptosyl)2-Kdo2-lipid A (Escherichia coli) is phosphorylated through an ATP-mediated lipopolysaccharide core heptose (I) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A-phosphate. The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through a lipopolysaccharide core heptosyl transferase III resulting in ADP, hydrogen ion, and glucosyl-(heptosyl)3-Kdo2-lipid A-phosphate. The latter compound is phosphorylated through an ATP-driven lipopolysaccharide core heptose (II) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-alpha-D-galactose through a UDP-D-galactose:(glucosyl)lipopolysaccharide-1,6-D-galactosyltransferase resulting in a UDP, a hydrogen ion and a galactosyl-glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-glucose through a (glucosyl)LPS α-1,3-glucosyltransferase resulting in a hydrogen ion, a UDP and galactosyl-(glucosyl)2-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with UDP-glucose through a UDP-glucose:(glucosyl)LPS α-1,2-glucosyltransferase resulting in UDP, a hydrogen ion and galactosyl-(glucosyl)3-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with ADP-L-glycero-beta-D-manno-heptose through a lipopolysaccharide core biosynthesis; heptosyl transferase IV; probably hexose transferase resulting in a Lipid A-core. A lipid A-core is then exported into the periplasmic space by a lipopolysaccharide ABC transporter. The lipid A-core is then flipped to the outer surface of the inner membrane by the ATP-binding cassette (ABC) transporter, MsbA. An additional integral membrane protein, YhjD, has recently been implicated in LPS export across the IM. The smallest LPS derivative that supports viability in E. coli is lipid IVA. However, it requires mutations in either MsbA or YhjD, to suppress the normally lethal consequence of an incomplete lipid A . Recent studies with deletion mutants implicate the periplasmic protein LptA, the cytosolic protein LptB, and the IM proteins LptC, LptF, and LptG in the subsequent transport of nascent LPS to the outer membrane (OM), where the LptD/LptE complex flips LPS to the outer surface.</description>
      <pathwhiz_id>PW001905</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>1,6-anhydro-&lt;i&gt;N&lt;/i&gt;-acetylmuramic acid recycling</name>
      <description>Anhydromuropeptides (mainly GlcNAc-1,6-anhMurNAc-L-Ala-γ-D-Glu-DAP-D-Ala) are steadily released during growth by lytic transglycosylases and endopeptidases and imported back into the cytoplasm for recycling. During bacterial growth, a very large proportion of the peptidoglycan polymer is degraded and reused in a process termed cell wall recycling. For example, the Gram-negative bacterium Escherichia coli recovers about half of its cell wall within one generation.
The anhydromuropeptides are imported by the ampG-encoded muropeptide:H+ symporter. Once inside the cytoplasm, the anhydromuropeptides are hydrolyzed by N-acetylmuramoyl-L-alanine amidase (ampD), β-N-acetylhexosaminidase (nagZ) and L,D-carboxypeptidase A (ldcA), yielding N-acetyl-β-D-glucosamine, 1,6-anhydro-N-acetyl-β-muramate, L-alanyl-γ-D-glutamyl-meso-diaminopimelate and D-alanine.
1,6-anhydro-N-acetyl-β-muramate is phosphorylated by anhydro-N-acetylmuramic acid kinase (anmK) and then converted into N-acetyl-D-glucosamine 6-phosphate by N-acetylmuramic acid 6-phosphate etherase (murQ). This is a branch point, as this compound could be directed either for further degradation or for recycling into new peptidoglycan monomers, as described in this pathway. The final product of this pathway, UDP-N-acetyl-α-D-muramate, is one of the precursors for peptidoglycan biosynthesis.
The tripeptide L-alanyl-γ-D-glutamyl-meso-diaminopimelate, which is generated by  muramoyltetrapeptide carboxypeptidase, can be degraded further, as described in muropeptide degradation. However, the vast majority is recycled by muropeptide ligase (mpl). This enzyme is a dedicated recycling enzyme that attaches the recovered Ala-Glu-DAP tripeptide to UDP-N-acetyl-α-D-muramate, thereby substituting three amino acid ligases of the peptidoglycan de novobiosynthetic pathway.
Although exogenously provided 1,6-anhydro-N-acetyl-β-muramate can be taken up by Escherichia coli, it can not serve as the sole source of carbon for growth, suggesting that it may be toxic to the cell. (EcoCyc)
</description>
      <pathwhiz_id>PW002064</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Secondary Metabolites: enterobacterial common antigen biosynthesis 2</name>
      <description>The biosynthesis of a enterobacterial common antigen can begin with a di-trans,octa-cis-undecaprenyl phosphate interacts with a Uridine diphosphate-N-acetylglucosamine through undecaprenyl-phosphate α-N-acetylglucosaminyl transferase resulting in a N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol and a Uridine 5'-monophosphate. The N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol then reacts with an UDP-ManNAcA from the Amino sugar and nucleotide sugar metabolism pathway. This reaction is metabolized by a UDP-N-acetyl-D-mannosaminuronic acid transferase resulting in a uridine 5' diphosphate, a hydrogen ion and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. Glucose 1 phosphate can be metabolize by interacting with a hydrogen ion and a thymidine 5-triphosphate by either reacting with a dTDP-glucose pyrophosphorylase or a dTDP-glucose pyrophosphorylase 2 resulting in the release of a pyrophosphate and a dTDP-D-glucose. The latter compound is then dehydrated through an dTDP-glucose 4,6-dehydratase 2 resulting in water and dTDP-4-dehydro-6-deoxy-D-glucose. The latter compound interacts with L-glutamic acid through a dTDP-4-dehydro-6-deoxy-D-glucose transaminase resulting in the release of oxoglutaric acid and dTDP-thomosamine. The latter compound interacts with acetyl-coa through a dTDP-fucosamine acetyltransferase resulting in a Coenzyme A, a hydrogen Ion and a TDP-Fuc4NAc. Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate then interacts with a TDP--Fuc4NAc through a 4-acetamido-4,6-dideoxy-D-galactose transferase resulting in a hydrogen ion, a dTDP and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. This compound is then transported through a protein wzxE into the periplasmic space so that it can be incorporated into the outer membrane Enterobacterial common antigen (ECA) is an outer membrane glycolipid common to all members of Enterobacteriaceae. ECA is a unique cell surface antigen that can be found in the outer leaflet of the outer membrane. The carbohydrate portion consists of N-acetyl-glucosamine, N-acetyl-D-mannosaminuronic acid and 4-acetamido-4,6-dideoxy-D-galactose. These amino sugars form trisaccharide repeat units which are part of linear heteropolysaccharide chains.</description>
      <pathwhiz_id>PW002045</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Secondary Metabolites: enterobacterial common antigen biosynthesis 3</name>
      <description>The biosynthesis of a enterobacterial common antigen can begin with a di-trans,octa-cis-undecaprenyl phosphate interacts with a Uridine diphosphate-N-acetylglucosamine through undecaprenyl-phosphate α-N-acetylglucosaminyl transferase resulting in a N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol and a Uridine 5'-monophosphate. The N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol then reacts with an UDP-ManNAcA from the Amino sugar and nucleotide sugar metabolism pathway. This reaction is metabolized by a UDP-N-acetyl-D-mannosaminuronic acid transferase resulting in a uridine 5' diphosphate, a hydrogen ion and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. Glucose 1 phosphate can be metabolize by interacting with a hydrogen ion and a thymidine 5-triphosphate by either reacting with a dTDP-glucose pyrophosphorylase or a dTDP-glucose pyrophosphorylase 2 resulting in the release of a pyrophosphate and a dTDP-D-glucose. The latter compound is then dehydrated through an dTDP-glucose 4,6-dehydratase 2 resulting in water and dTDP-4-dehydro-6-deoxy-D-glucose. The latter compound interacts with L-glutamic acid through a dTDP-4-dehydro-6-deoxy-D-glucose transaminase resulting in the release of oxoglutaric acid and dTDP-thomosamine. The latter compound interacts with acetyl-coa through a dTDP-fucosamine acetyltransferase resulting in a Coenzyme A, a hydrogen Ion and a TDP-Fuc4NAc. Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate then interacts with a TDP--Fuc4NAc through a 4-acetamido-4,6-dideoxy-D-galactose transferase resulting in a hydrogen ion, a dTDP and a Undecaprenyl N-acetyl-glucosaminyl-N-acetyl-mannosaminuronate-4-acetamido-4,6-dideoxy-D-galactose pyrophosphate. This compound is then transported through a protein wzxE into the periplasmic space so that it can be incorporated into the outer membrane Enterobacterial common antigen (ECA) is an outer membrane glycolipid common to all members of Enterobacteriaceae. ECA is a unique cell surface antigen that can be found in the outer leaflet of the outer membrane. The carbohydrate portion consists of N-acetyl-glucosamine, N-acetyl-D-mannosaminuronic acid and 4-acetamido-4,6-dideoxy-D-galactose. These amino sugars form trisaccharide repeat units which are part of linear heteropolysaccharide chains.</description>
      <pathwhiz_id>PW002046</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>lipopolysaccharide biosynthesis III</name>
      <description>E. coli lipid A is synthesized on the cytoplasmic surface of the inner membrane. The pathway can start from the fructose 6-phosphate that is either produced in the glycolysis and pyruvate dehydrogenase or be obtained from the interaction with D-fructose interacting with a mannose PTS permease. Fructose 6-phosphate interacts with L-glutamine through a D-fructose-6-phosphate aminotransferase resulting into a L-glutamic acid and a glucosamine 6-phosphate. The latter compound is isomerized through a phosphoglucosamine mutase resulting a glucosamine 1-phosphate. This compound is acetylated, interacting with acetyl-CoA through a bifunctional protein glmU resulting in a Coenzyme A, hydrogen ion and N-acetyl-glucosamine 1-phosphate. This compound interact with UTP and hydrogen ion through the bifunctional protein glmU resulting in a pyrophosphate and a UDP-N-acetylglucosamine. This compound interacts with (3R)-3-hydroxymyristoyl-[acp] through an UDP-N-acetylglucosamine acyltransferase resulting in a holo-[acp] and a UDP-3-O[(3R)-3-hydroxymyristoyl]-N-acetyl-alpha-D-glucosamine. This compound interacts with water through UDP-3-O-acyl-N-acetylglucosamine deacetylase resulting in an acetic acid and UDP-3-O-(3-hydroxymyristoyl)-α-D-glucosamine. The latter compound interacts with (3R)-3-hydroxymyristoyl-[acp] through 
UDP-3-O-(R-3-hydroxymyristoyl)-glucosamine N-acyltransferase releasing a hydrogen ion, a holo-acp and UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine. The latter compound is hydrolase by interacting with water and a UDP-2,3-diacylglucosamine hydrolase resulting in UMP, hydrogen ion and  2,3-bis[(3R)-3-hydroxymyristoyl]-α-D-glucosaminyl 1-phosphate. This last compound then interacts with a UDP-2-N,3-O-bis[(3R)-3-hydroxytetradecanoyl]-α-D-glucosamine through a lipid A disaccharide synthase resulting in a release of UDP, hydrogen ion and a lipid A disaccharide.  The lipid A disaccharide is phosphorylated by an ATP mediated 
tetraacyldisaccharide 4'-kinase resulting in the release of hydrogen ion and lipid IVA. 
 A D-ribulose 5-phosphate is isomerized with D-arabinose 5-phosphate isomerase 2  to result in a D-arabinose 5-phosphate. This compounds interacts with water and phosphoenolpyruvic acid through a 3-deoxy-D-manno-octulosonate 8-phosphate synthase resulting in the release of phosphate and  3-deoxy-D-manno-octulosonate 8-phosphate. This compound interacts with water through a 3-deoxy-D-manno-octulosonate 8-phosphate phosphatase thus releasing a phosphate and a 3-deoxy-D-manno-octulosonate. The latter compound interacts with CTP through a 3-deoxy-D-manno-octulosonate cytidylyltransferase resulting in a pyrophosphate and 
CMP-3-deoxy-α-D-manno-octulosonate.

CMP-3-deoxy-α-D-manno-octulosonate and lipid IVA interact with each other through a KDO transferase resulting in CMP, hydrogen ion and alpha-Kdo-(2--&gt;6)-lipid IVA. The latter compound reacts with CMP-3-deoxy-α-D-manno-octulosonate through a KDO transferase resulting in a CMP, hydrogen ion, and a a-Kdo-(2-&gt;4)-a-Kdo-(2-&gt;6)-lipid IVA. The latter compound can either react with a palmitoleoyl-acp through a palmitoleoyl acyltransferase resulting in the release of a holo-acyl carriere protein and a Kdo2-palmitoleoyl-lipid IVa which in turn reacts with a myristoyl-acp through a myristoyl-acp dependent acyltransferase resulting in a release of a holo-acp and a Kdo2-lipid A, cold adapted, or it can interact with a dodecanoyl-[acp] lauroyl acyltransferase resulting in a holo-[acp] and a (KDO)2-(lauroyl)-lipid IVA. The latter compound reacts with a myristoyl-[acp] through a myristoyl-acyl carrier protein (ACP)-dependent acyltransferase resulting in a holo-[acp], (KDO)2-lipid A. The latter compound reacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase I resulting hydrogen ion, ADP, heptosyl-KDO2-lipid A. The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through ADP-heptose:LPS heptosyltransferase II resulting in ADP, hydrogen ion and (heptosyl)2-Kdo2-lipid A. The latter compound UDP-glucose interacts with (heptosyl)2-Kdo2-lipid A resulting in UDP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A. Glucosyl-(heptosyl)2-Kdo2-lipid A (Escherichia coli) is phosphorylated through an ATP-mediated lipopolysaccharide core heptose (I) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)2-Kdo2-lipid A-phosphate.
The latter compound interacts with ADP-L-glycero-beta-D-manno-heptose through a lipopolysaccharide core heptosyl transferase III resulting in ADP, hydrogen ion, and  glucosyl-(heptosyl)3-Kdo2-lipid A-phosphate. The latter compound is phosphorylated through an ATP-driven lipopolysaccharide core heptose (II) kinase resulting in ADP, hydrogen ion and glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-alpha-D-galactose through a UDP-D-galactose:(glucosyl)lipopolysaccharide-1,6-D-galactosyltransferase resulting in a UDP, a hydrogen ion and a galactosyl-glucosyl-(heptosyl)3-Kdo2-lipid A-bisphosphate. The latter compound interacts with UDP-glucose through a (glucosyl)LPS α-1,3-glucosyltransferase resulting in a hydrogen ion, a UDP and galactosyl-(glucosyl)2-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with UDP-glucose through a UDP-glucose:(glucosyl)LPS α-1,2-glucosyltransferase resulting in UDP, a hydrogen ion and galactosyl-(glucosyl)3-(heptosyl)3-Kdo2-lipid A-bisphosphate. This compound then interacts with ADP-L-glycero-beta-D-manno-heptose  through a lipopolysaccharide core biosynthesis; heptosyl transferase IV; probably hexose transferase resulting in a Lipid A-core.
A lipid A-core is then exported into the periplasmic space by a lipopolysaccharide ABC transporter.

The lipid A-core is then flipped to the outer surface of the inner membrane by the ATP-binding cassette (ABC) transporter, MsbA. An additional integral membrane protein, YhjD, has recently been implicated in LPS export across the IM. The smallest LPS derivative that supports viability in E. coli is lipid IVA. However, it requires mutations in either MsbA or YhjD, to suppress the normally lethal consequence of an incomplete lipid A . Recent studies with deletion mutants implicate the periplasmic protein LptA, the cytosolic protein LptB, and the IM proteins LptC, LptF, and LptG in the subsequent transport of nascent LPS to the outer membrane (OM), where the LptD/LptE complex flips LPS to the outer surface. </description>
      <pathwhiz_id>PW002059</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>peptidoglycan biosynthesis I 2</name>
      <description>Peptidoglycan is a net-like polymer which surrounds the cytoplasmic membrane of most bacteria and functions to maintain cell shape and prevent rupture due to the internal turgor.In E. coli K-12, the peptidoglycan consists of glycan strands of alternating subunits of N-acetylglucosamine (GlcNAc) and N-acetylmuramic acid (MurNAc) which are cross-linked by short peptides. The pathway for constructing this net involves two cell compartments: cytoplasm and periplasmic space. The pathway starts with a beta-D-fructofuranose going through a mannose PTS permease, phosphorylating the compund and producing a beta-D-fructofuranose 6 phosphate. This compound can be obtained from the glycolysis and pyruvate dehydrogenase or from an isomerization reaction of Beta-D-glucose 6-phosphate through a glucose-6-phosphate isomerase.The compound Beta-D-fructofuranose 6 phosphate and L-Glutamine react with a glucosamine fructose-6-phosphate aminotransferase, thus producing a glucosamine 6-phosphate and a l-glutamic acid. The glucosamine 6-phosphate interacts with phosphoglucosamine mutase in a reversible reaction producing glucosamine-1P. Glucosamine-1p and acetyl coa undergo acetylation throuhg a bifunctional protein glmU releasing Coa and a hydrogen ion and producing a N-acetyl-glucosamine 1-phosphate. Glmu, being a bifunctional protein, follows catalyze the interaction of N-acetyl-glucosamine 1-phosphate, hydrogen ion and UTP into UDP-N-acetylglucosamine and pyrophosphate. UDP-N-acetylglucosamine then interacts with phosphoenolpyruvic acid and a UDP-N acetylglucosamine 1- carboxyvinyltransferase realeasing a phosphate and the compound UDP-N-acetyl-alpha-D-glucosamine-enolpyruvate. This compound undergoes a NADPH dependent reduction producing a UDP-N-acetyl-alpha-D-muramate through a UDP-N-acetylenolpyruvoylglucosamine reductase. UDP-N-acetyl-alpha-D-muramate and L-alanine react in an ATP-mediated ligation through a UDP-N-acetylmuramate-alanine ligase releasing an ADP, hydrogen ion, a phosphate and a UDP-N-acetylmuramoyl-L-alanine. This compound interacts with D-glutamic acid and ATP through UDP-N-acetylmuramoylalanine-D-glutamate ligase releasing ADP, A phosphate and UDP-N-acetylmuramoyl-L-alanyl-D-glutamate. The latter compound then interacts with meso-diaminopimelate in an ATP mediated ligation through a UDP-N-acetylmuramoylalanine-D-glutamate-2,6-diaminopimelate ligase resulting in ADP, phosphate, hydrogen ion and UDP-N-Acetylmuramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminopimelate. This compound in turn with D-alanyl-D-alanine react in an ATP-mediated ligation through UDP-N-Acetylmuramoyl-tripeptide-D-alanyl-D-alanine ligase to produce UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gama-D-glutamyl-meso-2,6-diaminopimeloyl-Dalanyl-D-alanine and hydrogen ion, ADP, phosphate. UDP-N-acetyl-alpha-D-muramoyl-L-alanyl-gama-D-glutamyl-meso-2,6-diaminopimeloyl-Dalanyl-D-alanine interacts with di-trans,octa-cis-undecaprenyl phosphate through a phospho-N-acetylmuramoyl-pentapeptide-transferase, resulting in UMP and N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimelyl-D-alanyl-D-alanine-diphosphoundecaprenol which in turn reacts with a UDP-N-acetylglucosamine through a N-acetylglucosaminyl transferase to produce a hydrogen, UDP and Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutaminyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine. This compound ends the cytoplasmic part of the pathway. Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutaminyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine is transported through a lipi II flippase. Once in the periplasmic space, the compound reacts with a penicillin binding protein 1A prodducing a peptidoglycan dimer, a hydrogen ion, and UDP. The peptidoglycan dimer then reacts with a penicillin binding protein 1B producing a peptidoglycan with D,D, cross-links and a D-alanine.</description>
      <pathwhiz_id>PW002062</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>O-antigen building blocks biosynthesis</name>
      <description>Lipopolysaccharide (LPS), a major outer membrane component, is composed of three domains: Lipid A; the core, which is an oligosaccharide consisting of an inner and outer region; and a distal repeating unit known as O-antigen.
E. coli K12 is capable of producing an O-antigen when all the rfb genes are intact. The O-antigen is part of the lipopolysaccharide and is attached to the lipid A-core component, which is separately synthesized. The O-antigen is a repeat unit composed of four sugars: glucose, N-acetylglucosamine, galactose and rhamnose.
This pathway depicts the synthesis of three of these sugars. UDP-galactose is transformed from its pyranose form to its furanose form. dTTP glucose-1-phosphate is derivatized to dTDP-rhamnose. Fructose-6-phosphate gains an amino group, incorporates an acetate moiety and then acquires a nucleoside diphosphate resulting in UDP-N-acetyl-D-glucosamine.(EcoCyc)</description>
      <pathwhiz_id>PW002089</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>superpathway of (KDO)&lt;SUB&gt;2&lt;/SUB&gt;-lipid A biosynthesis</name>
      <ecocyc_pathway_id>NAGLIPASYN-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>UDP-&lt;i&gt;N&lt;/i&gt;-acetyl-D-glucosamine biosynthesis I</name>
      <ecocyc_pathway_id>UDPNAGSYN-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>enterobacterial common antigen biosynthesis</name>
      <ecocyc_pathway_id>ECASYN-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>UDP-&lt;i&gt;N&lt;/i&gt;-acetylmuramoyl-pentapeptide biosynthesis III (&lt;i&gt;meso&lt;/i&gt;-DAP-containing)</name>
      <ecocyc_pathway_id>PWY-6387</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>peptidoglycan biosynthesis I (&lt;I&gt;meso&lt;/I&gt;-diaminopimelate containing)</name>
      <ecocyc_pathway_id>PEPTIDOGLYCANSYN-PWY</ecocyc_pathway_id>
    </pathway>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>864</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>18397</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30938</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>37405</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480484</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480485</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480486</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480487</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480488</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480489</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480490</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480491</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480492</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480493</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480494</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480495</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480496</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480497</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480498</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480499</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480500</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480501</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480502</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480503</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>480504</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1314</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143330</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143331</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143332</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143333</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143334</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143335</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143336</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143337</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143338</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143339</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143340</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143341</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143342</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143343</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143344</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143345</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143346</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143347</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143348</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>143349</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>6243</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>6244</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178665</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178666</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178667</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>180984</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>180985</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>180986</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>439118</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>439119</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2244737</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2245358</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2246880</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2247428</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2248852</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2249518</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2250855</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2251569</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2429329</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2429330</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2429331</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2505533</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2505534</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>2505535</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1013</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1257</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB00290</hmdb_id>
  <pubchem_compound_id>10705</pubchem_compound_id>
  <chemspider_id>393240</chemspider_id>
  <kegg_id>C00043</kegg_id>
  <chebi_id>16264</chebi_id>
  <biocyc_id>UDP-N-ACETYL-D-GLUCOSAMINE</biocyc_id>
  <het_id>UD1</het_id>
  <wikipidia>UDP-N-acetylglucosamine</wikipidia>
  <foodb_id/>
  <general_references>
    <reference>
      <reference_text>Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590.</reference_text>
      <pubmed_id>21097882</pubmed_id>
    </reference>
    <reference>
      <reference_text>Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114.</reference_text>
      <pubmed_id>22080510</pubmed_id>
    </reference>
    <reference>
      <reference_text>van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25.</reference_text>
      <pubmed_id>17765195</pubmed_id>
    </reference>
    <reference>
      <reference_text>Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948.</reference_text>
      <pubmed_id>18331064</pubmed_id>
    </reference>
    <reference>
      <reference_text>Bennett, B. D., Kimball, E. H., Gao, M., Osterhout, R., Van Dien, S. J., Rabinowitz, J. D. (2009). "Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli." Nat Chem Biol 5:593-599.</reference_text>
      <pubmed_id>19561621</pubmed_id>
    </reference>
    <reference>
      <reference_text>Ishii, N., Nakahigashi, K., Baba, T., Robert, M., Soga, T., Kanai, A., Hirasawa, T., Naba, M., Hirai, K., Hoque, A., Ho, P. Y., Kakazu, Y., Sugawara, K., Igarashi, S., Harada, S., Masuda, T., Sugiyama, N., Togashi, T., Hasegawa, M., Takai, Y., Yugi, K., Arakawa, K., Iwata, N., Toya, Y., Nakayama, Y., Nishioka, T., Shimizu, K., Mori, H., Tomita, M. (2007). "Multiple high-throughput analyses monitor the response of E. coli to perturbations." Science 316:593-597.</reference_text>
      <pubmed_id>17379776</pubmed_id>
    </reference>
    <reference>
      <reference_text>Kobayashi T, Sleeman JE, Coughtrie MW, Burchell B: Molecular and functional characterization of microsomal UDP-glucuronic acid uptake by members of the nucleotide sugar transporter (NST) family. Biochem J. 2006 Dec 1;400(2):281-9.</reference_text>
      <pubmed_id>16965264</pubmed_id>
    </reference>
    <reference>
      <reference_text>Kim CH: Increased expression of N-acetylglucosaminyltransferase-V in human hepatoma cells by retinoic acid and 1alpha,25-dihydroxyvitamin D3. Int J Biochem Cell Biol. 2004 Nov;36(11):2307-19.</reference_text>
      <pubmed_id>15313475</pubmed_id>
    </reference>
    <reference>
      <reference_text>Jamieson JC, Kaplan HA, Woloski BM, Hellman M, Ham K: Glycoprotein biosynthesis during the acute-phase response to inflammation.  Can J Biochem Cell Biol. 1983 Sep;61(9):1041-8.</reference_text>
      <pubmed_id>6627106</pubmed_id>
    </reference>
    <reference>
      <reference_text>Love DC, Hanover JA: The hexosamine signaling pathway: deciphering the "O-GlcNAc code". Sci STKE. 2005 Nov 29;2005(312):re13.</reference_text>
      <pubmed_id>16317114</pubmed_id>
    </reference>
    <reference>
      <reference_text>Wells L, Vosseller K, Hart GW: A role for N-acetylglucosamine as a nutrient sensor and mediator of insulin resistance. Cell Mol Life Sci. 2003 Feb;60(2):222-8.</reference_text>
      <pubmed_id>12678487</pubmed_id>
    </reference>
  </general_references>
  <synthesis_reference>Takenouchi, Kenji; Ishige, Kazuya; Midorikawa, Yuichiro; Okuyama, Kiyoshi; Hamamoto, Tomoki; Noguchi, Toshitada.  Process for producing uridine diphosphate-N-acetylglucosamine.    PCT Int. Appl.  (1999),     38 pp. </synthesis_reference>
  <msds_url>http://hmdb.ca/system/metabolites/msds/000/000/211/original/HMDB00290.pdf?1358462016</msds_url>
  <enzymes>
    <enzyme>
      <name>Protein ushA</name>
      <uniprot_id>P07024</uniprot_id>
      <uniprot_name>USHA_ECOLI</uniprot_name>
      <gene_name>ushA</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P07024.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Acyl-[acyl-carrier-protein]--UDP-N-acetylglucosamine O-acyltransferase</name>
      <uniprot_id>P0A722</uniprot_id>
      <uniprot_name>LPXA_ECOLI</uniprot_name>
      <gene_name>lpxA</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A722.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>UDP-N-acetylglucosamine 1-carboxyvinyltransferase</name>
      <uniprot_id>P0A749</uniprot_id>
      <uniprot_name>MURA_ECOLI</uniprot_name>
      <gene_name>murA</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A749.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Undecaprenyl-phosphate alpha-N-acetylglucosaminyl 1-phosphate transferase</name>
      <uniprot_id>P0AC78</uniprot_id>
      <uniprot_name>WECA_ECOLI</uniprot_name>
      <gene_name>wecA</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AC78.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Bifunctional protein glmU</name>
      <uniprot_id>P0ACC7</uniprot_id>
      <uniprot_name>GLMU_ECOLI</uniprot_name>
      <gene_name>glmU</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0ACC7.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>UDP-N-acetylglucosamine--N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase</name>
      <uniprot_id>P17443</uniprot_id>
      <uniprot_name>MURG_ECOLI</uniprot_name>
      <gene_name>murG</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P17443.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>UDP-N-acetylglucosamine 2-epimerase</name>
      <uniprot_id>P27828</uniprot_id>
      <uniprot_name>WECB_ECOLI</uniprot_name>
      <gene_name>wecB</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P27828.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Lipopolysaccharide 1,2-N-acetylglucosaminetransferase</name>
      <uniprot_id>P27242</uniprot_id>
      <uniprot_name>WAAU_ECOLI</uniprot_name>
      <gene_name>waaU</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P27242.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Acyl carrier protein</name>
      <uniprot_id>P0A6A8</uniprot_id>
      <uniprot_name>ACP_ECOLI</uniprot_name>
      <gene_name>acpP</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A6A8.xml</protein_url>
    </enzyme>
  </enzymes>
  <transporters>
    <enzyme>
      <name>Outer membrane protein N</name>
      <uniprot_id>P77747</uniprot_id>
      <uniprot_name>OMPN_ECOLI</uniprot_name>
      <gene_name>ompN</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P77747.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Outer membrane pore protein E</name>
      <uniprot_id>P02932</uniprot_id>
      <uniprot_name>PHOE_ECOLI</uniprot_name>
      <gene_name>phoE</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P02932.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Outer membrane protein F</name>
      <uniprot_id>P02931</uniprot_id>
      <uniprot_name>OMPF_ECOLI</uniprot_name>
      <gene_name>ompF</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P02931.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Outer membrane protein C</name>
      <uniprot_id>P06996</uniprot_id>
      <uniprot_name>OMPC_ECOLI</uniprot_name>
      <gene_name>ompC</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P06996.xml</protein_url>
    </enzyme>
  </transporters>
  <reactions>
    <reaction_text>(R)-3-Hydroxytetradecanoyl-[acyl-carrier protein] + Uridine diphosphate-N-acetylglucosamine &lt;&gt; acyl carrier protein + UDP-3-O-(3-Hydroxymyristoyl)-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine &gt; Hydrogen ion + Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id>R05032</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Water + Uridine diphosphate-N-acetylglucosamine &gt; N-Acetyl-glucosamine 1-phosphate +2 Hydrogen ion + Uridine 5'-monophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Phosphoenolpyruvic acid + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Phosphate + UDP-N-Acetyl-3-(1-carboxyvinyl)-D-glucosamine</reaction_text>
    <kegg_reaction_id>R00660</kegg_reaction_id>
    <ecocyc_id>UDPNACETYLGLUCOSAMENOLPYRTRANS-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>N-Acetyl-glucosamine 1-phosphate + Hydrogen ion + Uridine triphosphate &gt; Pyrophosphate + Uridine diphosphate-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Undecaprenyl phosphate &gt; Uridine 5'-monophosphate + Undecaprenyl-N-acetyl-alpha-D-glucosaminyl-pyrophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine &lt;&gt; UDP-N-Acetyl-D-mannosamine</reaction_text>
    <kegg_reaction_id>R00420</kegg_reaction_id>
    <ecocyc_id>UDPGLCNACEPIM-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Water &lt;&gt; N-Acetylmannosamine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id>R00414</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine triphosphate + Glucosamine-1P &lt;&gt; Pyrophosphate + Uridine diphosphate-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id>R00416</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>(3R)-3-Hydroxytetradecanoyl-[acyl-carrier protein] + Uridine diphosphate-N-acetylglucosamine + (3R)-3-Hydroxytetradecanoyl-[acyl-carrier protein] &lt;&gt; Acyl-carrier protein + UDP-3-O-(3-Hydroxymyristoyl)-N-acetylglucosamine + Acyl-carrier protein</reaction_text>
    <kegg_reaction_id>R04567</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id>R05032</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>MurAc(oyl-L-Ala-D-gamma-Glu-L-Lys-D-Ala-D-Ala)-diphospho-undecaprenol + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id>R05662</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Di-trans,poly-cis-undecaprenyl phosphate &lt;&gt; N-Acetyl-D-glucosaminyldiphosphoundecaprenol + Uridine 5'-monophosphate + N-Acetyl-D-glucosaminyldiphospho-di-trans,octa-cis-undecaprenol</reaction_text>
    <kegg_reaction_id>R08856</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine  poly-&amp;beta;-1,6-N-acetyl-D-glucosamine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>RXN0-5413</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>a lipopolysaccharide + Uridine diphosphate-N-acetylglucosamine  a &lt;i&gt;N&lt;/i&gt;-acetyl-D-glucosaminyl-lipopolysaccharide + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>2.4.1.56-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Di-trans,poly-cis-undecaprenyl phosphate + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Undecaprenyl-N-acetyl-alpha-D-glucosaminyl-pyrophosphate + Uridine 5'-monophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>GLCNACPTRANS-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimelyl-D-alanyl-D-alanine-diphosphoundecaprenol + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Hydrogen ion + N-Acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-D-alanyl-D-alanine-diphosphoundecaprenyl-N-acetylglucosamine + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>NACGLCTRANS-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Hydrogen ion + &lt;i&gt;N&lt;/i&gt;-acetyl-&amp;alpha;-D-glucosamine 1-phosphate + Uridine triphosphate &gt; Uridine diphosphate-N-acetylglucosamine + Pyrophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>NAG1P-URIDYLTRANS-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Phosphoenolpyruvic acid &gt; UDP-N-Acetyl-3-(1-carboxyvinyl)-D-glucosamine + Phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>UDPNACETYLGLUCOSAMENOLPYRTRANS-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Uridine triphosphate + N-acetyl-alpha-D-glucosamine 1-phosphate &gt; Pyrophosphate + Uridine diphosphate-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>(R)-3-hydroxytetradecanoyl-[acyl-carrier-protein] + Uridine diphosphate-N-acetylglucosamine &gt; [acyl-carrier-protein] + UDP-3-O-(3-Hydroxymyristoyl)-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Phosphoenolpyruvic acid + Uridine diphosphate-N-acetylglucosamine &gt; Inorganic phosphate + UDP-N-Acetyl-3-(1-carboxyvinyl)-D-glucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol &gt; Uridine 5'-diphosphate + GlcNAc-(1-&gt;4)-Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + LPS (1-O-antigen) &gt; Uridine 5'-diphosphate + N-acetyl-D-glucosaminyllipopolysaccharide</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + di-trans,octa-cis-undecaprenyl phosphate &gt; Uridine 5'-monophosphate + N-Acetyl-D-glucosaminyldiphospho-di-trans,octa-cis-undecaprenol</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine &gt; UDP-N-Acetyl-D-mannosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Mur2Ac(oyl-L-Ala-gamma-D-Glu-L-Lys-D-Ala-D-Ala)-diphosphoundecaprenol &lt;&gt; Uridine 5'-diphosphate + Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-gamma-D-glutamyl-L-lysyl-D-alanyl-D-alanine</reaction_text>
    <kegg_reaction_id>R05662 R06173 </kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + LPS (1-O-antigen) &lt;&gt; Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id>R01996 </kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + (3R)-3-hydroxymyristoyl-[acp]  &gt; a holo-[acyl-carrier protein] + UDP-3-O-[(3R)-3-hydroxymyristoyl]-N-acetyl-α-D-glucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003024</pw_reaction_id>
    <reaction_text>N-Acetyl-glucosamine 1-phosphate + Uridine triphosphate + Hydrogen ion + N-Acetyl-glucosamine 1-phosphate + Uridine triphosphate &gt; Uridine diphosphate-N-acetylglucosamine + Pyrophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003314</pw_reaction_id>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine &lt;&gt; UDP-N-acetyl-D-mannosamine + UDP-N-Acetyl-D-mannosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003315</pw_reaction_id>
    <reaction_text>Uridine diphosphate-N-acetylglucosamine + Phosphoenolpyruvic acid &gt; Phosphate + UDP-N-acetyl-α-D-glucosamine-enolpyruvate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003317</pw_reaction_id>
    <reaction_text>Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine diphosphate-N-acetylglucosamine + Undecaprenyl-diphospho-N-acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine &gt; Uridine 5'-diphosphate + Hydrogen ion + lipid II(A) + Uridine 5'-diphosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003453</pw_reaction_id>
    <reaction_text>di-trans,octa-cis-undecaprenyl phosphate + Uridine diphosphate-N-acetylglucosamine &gt; Uridine 5'-monophosphate + N-acetyl-α-D-glucosaminyl-diphospho-ditrans,octacis-undecaprenol</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003700</pw_reaction_id>
    <reaction_text>N-Acetylmuramoyl-L-alanyl-D-glutamyl-meso-2,6-diaminopimelyl-D-alanyl-D-alanine-diphosphoundecaprenol + Uridine diphosphate-N-acetylglucosamine &gt; Undecaprenyl-diphospho-N-acetylmuramoyl-(N-acetylglucosamine)-L-alanyl-D-glutaminyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine + Uridine 5'-diphosphate + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R006016</pw_reaction_id>
    <reaction_text>Phosphoenolpyruvic acid + Uridine diphosphate-N-acetylglucosamine &lt;&gt; Phosphate + UDP-N-Acetyl-3-(1-carboxyvinyl)-D-glucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Uridine triphosphate + Glucosamine-1P &lt;&gt; Pyrophosphate + Uridine diphosphate-N-acetylglucosamine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
  </reactions>
  <concentrations>
    <growth_media>Gutnick minimal complete medium (4.7 g/L KH2PO4; 13.5 g/L K2HPO4; 1 g/L K2SO4; 0.1 g/L MgSO4-7H2O; 10 mM NH4Cl) with 4 g/L glucose</growth_media>
    <growth_system>Shake flask and filter culture</growth_system>
    <concentration>9240.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal/>
    <error>0.0</error>
    <temperature>37 oC</temperature>
    <strain>K12 NCM3722</strain>
    <growth_status>Mid-Log Phase</growth_status>
    <molecules>36960000</molecules>
    <molecules_error>0</molecules_error>
    <reference>
      <reference_text>Bennett, B. D., Kimball, E. H., Gao, M., Osterhout, R., Van Dien, S. J., Rabinowitz, J. D. (2009). "Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli." Nat Chem Biol 5:593-599.</reference_text>
      <pubmed_id>19561621</pubmed_id>
    </reference>
    <growth_media>Gutnick minimal complete medium (4.7 g/L KH2PO4; 13.5 g/L K2HPO4; 1 g/L K2SO4; 0.1 g/L MgSO4-7H2O; 10 mM NH4Cl) with 4 g/L glycerol</growth_media>
    <growth_system>Shake flask and filter culture</growth_system>
    <concentration>4110.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal/>
    <error>0.0</error>
    <temperature>37 oC</temperature>
    <strain>K12 NCM3722</strain>
    <growth_status>Mid-Log Phase</growth_status>
    <molecules>16440000</molecules>
    <molecules_error>0</molecules_error>
    <reference>
      <reference_text>Bennett, B. D., Kimball, E. H., Gao, M., Osterhout, R., Van Dien, S. J., Rabinowitz, J. D. (2009). "Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli." Nat Chem Biol 5:593-599.</reference_text>
      <pubmed_id>19561621</pubmed_id>
    </reference>
    <growth_media>Gutnick minimal complete medium (4.7 g/L KH2PO4; 13.5 g/L K2HPO4; 1 g/L K2SO4; 0.1 g/L MgSO4-7H2O; 10 mM NH4Cl) with 4 g/L acetate</growth_media>
    <growth_system>Shake flask and filter culture</growth_system>
    <concentration>2400.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal/>
    <error>0.0</error>
    <temperature>37 oC</temperature>
    <strain>K12 NCM3722</strain>
    <growth_status>Mid-Log Phase</growth_status>
    <molecules>9600000</molecules>
    <molecules_error>0</molecules_error>
    <reference>
      <reference_text>Bennett, B. D., Kimball, E. H., Gao, M., Osterhout, R., Van Dien, S. J., Rabinowitz, J. D. (2009). "Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli." Nat Chem Biol 5:593-599.</reference_text>
      <pubmed_id>19561621</pubmed_id>
    </reference>
    <growth_media>48 mM Na2HPO4, 22 mM KH2PO4, 10 mM NaCl, 45 mM (NH4)2SO4, supplemented with 1 mM MgSO4, 1 mg/l thiamine·HCl, 5.6 mg/l CaCl2, 8 mg/l FeCl3, 1 mg/l MnCl2·4H2O, 1.7 mg/l ZnCl2, 0.43 mg/l CuCl2·2H2O, 0.6 mg/l CoCl2·2H2O and 0.6 mg/l Na2MoO4·2H2O.  4 g/L Gluco</growth_media>
    <growth_system>Bioreactor, pH controlled, O2 and CO2 controlled, dilution rate: 0.2/h</growth_system>
    <concentration>542.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal/>
    <error>0.0</error>
    <temperature>37 oC</temperature>
    <strain>BW25113</strain>
    <growth_status>Stationary Phase, glucose limited</growth_status>
    <molecules>2168000</molecules>
    <molecules_error>0</molecules_error>
    <reference>
      <reference_text>Ishii, N., Nakahigashi, K., Baba, T., Robert, M., Soga, T., Kanai, A., Hirasawa, T., Naba, M., Hirai, K., Hoque, A., Ho, P. Y., Kakazu, Y., Sugawara, K., Igarashi, S., Harada, S., Masuda, T., Sugiyama, N., Togashi, T., Hasegawa, M., Takai, Y., Yugi, K., Arakawa, K., Iwata, N., Toya, Y., Nakayama, Y., Nishioka, T., Shimizu, K., Mori, H., Tomita, M. (2007). "Multiple high-throughput analyses monitor the response of E. coli to perturbations." Science 316:593-597.</reference_text>
      <pubmed_id>17379776</pubmed_id>
    </reference>
  </concentrations>
</compound>
