<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>2.0</version>
  <creation_date>2012-05-31 10:22:52 -0600</creation_date>
  <update_date>2015-09-13 12:56:06 -0600</update_date>
  <accession>ECMDB00172</accession>
  <m2m_id>M2MDB000071</m2m_id>
  <name>L-Isoleucine</name>
  <description>Isoleucine is an amino acid with the chemical formula HO2CCH(NH2)CH(CH3)CH2CH3. Its codons are AUU, AUC and AUA. With a hydrocarbon side chain, isoleucine is classified as a hydrophobic amino acid. Together with threonine, isoleucine is one of two common amino acids that have a chiral side chain. Four stereoisomers of isoleucine are possible, including two possible diastereomers of L-isoleucine. However, isoleucine present in nature exists in one enantiomeric form, (2S,3S)-2-amino-3-methylpentanoic acid. (Wikipedia)</description>
  <synonyms>
    <synonym>(2S,3S)-2-amino-3-methyl-Pentanoate</synonym>
    <synonym>(2S,3S)-2-amino-3-methyl-Pentanoic acid</synonym>
    <synonym>(2S,3S)-2-Amino-3-methylpentanoate</synonym>
    <synonym>(2S,3S)-2-Amino-3-methylpentanoic acid</synonym>
    <synonym>(2S,3S)-a-amino-b-Merthyl-N-valerate</synonym>
    <synonym>(2S,3S)-a-amino-b-Merthyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-a-amino-b-Merthylvalerate</synonym>
    <synonym>(2S,3S)-a-amino-b-Merthylvaleric acid</synonym>
    <synonym>(2S,3S)-a-Amino-b-methyl-N-valerate</synonym>
    <synonym>(2S,3S)-a-Amino-b-methyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-a-Amino-b-methylvalerate</synonym>
    <synonym>(2S,3S)-a-Amino-b-methylvaleric acid</synonym>
    <synonym>(2S,3S)-a-Amino-beta-methylvalerate</synonym>
    <synonym>(2S,3S)-a-Amino-beta-methylvaleric acid</synonym>
    <synonym>(2S,3S)-a-amino-β-Methylvalerate</synonym>
    <synonym>(2S,3S)-a-amino-β-Methylvaleric acid</synonym>
    <synonym>(2S,3S)-Alph-amino-b-methylvalerate</synonym>
    <synonym>(2S,3S)-Alph-amino-b-methylvaleric acid</synonym>
    <synonym>(2S,3S)-alph-Amino-beta-methylvalerate</synonym>
    <synonym>(2S,3S)-alph-Amino-beta-methylvaleric acid</synonym>
    <synonym>(2S,3S)-Alph-amino-β-methylvalerate</synonym>
    <synonym>(2S,3S)-Alph-amino-β-methylvaleric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-b-methyl-N-valerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-b-methyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-b-methylvalerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-b-methylvaleric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-merthyl-n-valerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-merthyl-n-valeric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-merthylvalerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-merthylvaleric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-methyl-N-valerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-methyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-methylvalerate</synonym>
    <synonym>(2S,3S)-alpha-Amino-beta-methylvaleric acid</synonym>
    <synonym>(2S,3S)-α-amino-b-Methyl-N-valerate</synonym>
    <synonym>(2S,3S)-α-amino-b-Methyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-α-amino-b-Methylvalerate</synonym>
    <synonym>(2S,3S)-α-amino-b-Methylvaleric acid</synonym>
    <synonym>(2S,3S)-α-amino-β-Merthyl-N-valerate</synonym>
    <synonym>(2S,3S)-α-amino-β-Merthyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-α-amino-β-Merthylvalerate</synonym>
    <synonym>(2S,3S)-α-amino-β-Merthylvaleric acid</synonym>
    <synonym>(2S,3S)-α-amino-β-Methyl-N-valerate</synonym>
    <synonym>(2S,3S)-α-amino-β-Methyl-N-valeric acid</synonym>
    <synonym>(2S,3S)-α-amino-β-Methylvalerate</synonym>
    <synonym>(2S,3S)-α-amino-β-Methylvaleric acid</synonym>
    <synonym>(S)-Isoleucine</synonym>
    <synonym>(S,S)-Isoleucine</synonym>
    <synonym>2-Amino-3-methylpentanoate</synonym>
    <synonym>2-Amino-3-methylpentanoic acid</synonym>
    <synonym>2-Amino-3-methylvalerate</synonym>
    <synonym>2-Amino-3-methylvaleric acid</synonym>
    <synonym>2S,3S-Isoleucine</synonym>
    <synonym>Erythro-L-Isoleucine</synonym>
    <synonym>I</synonym>
    <synonym>Ile</synonym>
    <synonym>Iso-leucine</synonym>
    <synonym>Isoleucine</synonym>
    <synonym>L-(+)-Isoleucine</synonym>
    <synonym>L-Ile</synonym>
    <synonym>[S-(R*,R*)]-2-Amino-3-methylpentanoate</synonym>
    <synonym>[S-(R*,R*)]-2-Amino-3-methylpentanoic acid</synonym>
  </synonyms>
  <chemical_formula>C6H13NO2</chemical_formula>
  <average_molecular_weight>131.1729</average_molecular_weight>
  <monisotopic_moleculate_weight>131.094628665</monisotopic_moleculate_weight>
  <iupac_name>(2S,3S)-2-amino-3-methylpentanoic acid</iupac_name>
  <traditional_iupac>L-isoleucine</traditional_iupac>
  <cas_registry_number>73-32-5</cas_registry_number>
  <smiles>CC[C@H](C)[C@H](N)C(O)=O</smiles>
  <inchi>InChI=1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1</inchi>
  <inchikey>AGPKZVBTJJNPAG-WHFBIAKZSA-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>-1.73</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>-0.06</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>1.14e+02 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
    <property>
      <kind>melting_point</kind>
      <value>285.5 oC</value>
    </property>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>-1.5</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>2.79</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>9.59</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>(2S,3S)-2-amino-3-methylpentanoic acid</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>131.1729</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>131.094628665</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>CC[C@H](C)[C@H](N)C(O)=O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C6H13NO2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>AGPKZVBTJJNPAG-WHFBIAKZSA-N</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polar_surface_area</kind>
    <value>63.32</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>refractivity</kind>
    <value>34.09</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>14.11</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>3</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>acceptor_count</kind>
    <value>3</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>donor_count</kind>
    <value>2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>physiological_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formal_charge</kind>
    <value>0</value>
    <source>ChemAxon</source>
  </property>
  <pathways>
    <pathway>
      <name>Valine, leucine and isoleucine biosynthesis</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00290</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Aminoacyl-tRNA biosynthesis</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00970</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Valine, leucine and isoleucine degradation</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00280</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>ABC transporters</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec02010</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>isoleucine biosynthesis</name>
      <description>Isoleucine biosynthesis begins with L-threonine from the threonine biosynthesis pathway. L-threonine interacts with a threonine dehydratase biosynthetic releasing water, a hydrogen ion and (2Z)-2-aminobut-2-enoate. This compound is isomerized into a 2-iminobutanoate which interacts with water and a hydrogen ion spontaneously, resulting in the release of ammonium and 2-ketobutyric acid. This compound reacts with pyruvic acid and hydrogen ion through an acetohydroxybutanoate synthase / acetolactate synthase 2 resulting in carbon dioxide and (S)-2-Aceto-2-hydroxybutanoic acid. The latter compound is reduced by an NADPH driven acetohydroxy acid isomeroreductase releasing NADP and acetohydroxy acid isomeroreductase. The latter compound is dehydrated by a dihydroxy acid dehydratase resulting in  3-methyl-2-oxovaleric acid.This compound reacts in a reversible reaction with L-glutamic acid through a Branched-chain-amino-acid aminotransferase resulting in oxoglutaric acid and L-isoleucine.
L-isoleucine can also be transported into  the cytoplasm through two different methods:  a branched chain amino acid ABC transporter or a 
branched chain amino acid transporter BrnQ





y.

</description>
      <pathwhiz_id>PW000818</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>tRNA Charging 2</name>
      <description>This pathway groups together all E. coli tRNA charging reactions.</description>
      <pathwhiz_id>PW000803</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>tRNA charging</name>
      <description>This pathway groups together all E. coli tRNA charging reactions.</description>
      <pathwhiz_id>PW000799</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>isoleucine biosynthesis I (from threonine)</name>
      <ecocyc_pathway_id>ILEUSYN-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>tRNA charging</name>
      <ecocyc_pathway_id>TRNA-CHARGING-PWY</ecocyc_pathway_id>
    </pathway>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>410</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>411</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>412</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>413</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>414</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>2741</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30031</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30374</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30375</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30376</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30599</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30727</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30793</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>32117</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>32316</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>37336</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>154007</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1052684</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1052685</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1052687</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::EiMs</type>
      <spectrum_id>1294</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1136</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1189</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>3304</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5972</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5973</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5974</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5975</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5976</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5977</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5978</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5979</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5980</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5981</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5982</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5983</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5984</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5985</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5986</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5987</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5988</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5989</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5990</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>5991</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>166474</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>271</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>272</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>273</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3317</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3318</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3319</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3320</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3321</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3322</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3323</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3324</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3325</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3326</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3327</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3328</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3329</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3330</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3331</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3332</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3333</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3334</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>3340</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178770</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178771</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178772</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>981</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1185</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB00172</hmdb_id>
  <pubchem_compound_id>791</pubchem_compound_id>
  <chemspider_id>6067</chemspider_id>
  <kegg_id>C00407</kegg_id>
  <chebi_id>17191</chebi_id>
  <biocyc_id>ILE</biocyc_id>
  <het_id>ILE_LFZW</het_id>
  <wikipidia>Ile</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>Vijayendran, C., Barsch, A., Friehs, K., Niehaus, K., Becker, A., Flaschel, E. (2008). "Perceiving molecular evolution processes in Escherichia coli by comprehensive metabolite and gene expression profiling." Genome Biol 9:R72.</reference_text>
      <pubmed_id>18402659</pubmed_id>
    </reference>
    <reference>
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      <reference_text>Edvinsson L: Innervation and effects of dilatory neuropeptides on cerebral vessels. New aspects. Blood Vessels. 1991;28(1-3):35-45.</reference_text>
      <pubmed_id>2001478</pubmed_id>
    </reference>
  </general_references>
  <synthesis_reference> Marvel, C. S. L-Isoleucine. Organic Syntheses (1941), 21 60-4.</synthesis_reference>
  <msds_url>http://hmdb.ca/system/metabolites/msds/000/000/121/original/HMDB00172.pdf?1358894678</msds_url>
  <enzymes>
    <enzyme>
      <name>Isoleucyl-tRNA synthetase</name>
      <uniprot_id>P00956</uniprot_id>
      <uniprot_name>SYI_ECOLI</uniprot_name>
      <gene_name>ileS</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P00956.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport system permease protein livH</name>
      <uniprot_id>P0AEX7</uniprot_id>
      <uniprot_name>LIVH_ECOLI</uniprot_name>
      <gene_name>livH</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AEX7.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport system permease protein livM</name>
      <uniprot_id>P22729</uniprot_id>
      <uniprot_name>LIVM_ECOLI</uniprot_name>
      <gene_name>livM</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P22729.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Branched-chain-amino-acid aminotransferase</name>
      <uniprot_id>P0AB80</uniprot_id>
      <uniprot_name>ILVE_ECOLI</uniprot_name>
      <gene_name>ilvE</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AB80.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport ATP-binding protein livG</name>
      <uniprot_id>P0A9S7</uniprot_id>
      <uniprot_name>LIVG_ECOLI</uniprot_name>
      <gene_name>livG</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A9S7.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Leu/Ile/Val-binding protein</name>
      <uniprot_id>P0AD96</uniprot_id>
      <uniprot_name>LIVJ_ECOLI</uniprot_name>
      <gene_name>livJ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AD96.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport ATP-binding protein livF</name>
      <uniprot_id>P22731</uniprot_id>
      <uniprot_name>LIVF_ECOLI</uniprot_name>
      <gene_name>livF</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P22731.xml</protein_url>
    </enzyme>
  </enzymes>
  <transporters>
    <enzyme>
      <name>Uncharacterized amino-acid ABC transporter ATP-binding protein yecC</name>
      <uniprot_id>P37774</uniprot_id>
      <uniprot_name>YECC_ECOLI</uniprot_name>
      <gene_name>yecC</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P37774.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Inner membrane amino-acid ABC transporter permease protein yecS</name>
      <uniprot_id>P0AFT2</uniprot_id>
      <uniprot_name>YECS_ECOLI</uniprot_name>
      <gene_name>yecS</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AFT2.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport system permease protein livH</name>
      <uniprot_id>P0AEX7</uniprot_id>
      <uniprot_name>LIVH_ECOLI</uniprot_name>
      <gene_name>livH</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AEX7.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport system permease protein livM</name>
      <uniprot_id>P22729</uniprot_id>
      <uniprot_name>LIVM_ECOLI</uniprot_name>
      <gene_name>livM</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P22729.xml</protein_url>
    </enzyme>
    <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>High-affinity branched-chain amino acid transport ATP-binding protein livG</name>
      <uniprot_id>P0A9S7</uniprot_id>
      <uniprot_name>LIVG_ECOLI</uniprot_name>
      <gene_name>livG</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A9S7.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Leu/Ile/Val-binding protein</name>
      <uniprot_id>P0AD96</uniprot_id>
      <uniprot_name>LIVJ_ECOLI</uniprot_name>
      <gene_name>livJ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AD96.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>High-affinity branched-chain amino acid transport ATP-binding protein livF</name>
      <uniprot_id>P22731</uniprot_id>
      <uniprot_name>LIVF_ECOLI</uniprot_name>
      <gene_name>livF</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P22731.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>Branched-chain amino acid transport system 2 carrier protein</name>
      <uniprot_id>P0AD99</uniprot_id>
      <uniprot_name>BRNQ_ECOLI</uniprot_name>
      <gene_name>brnQ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0AD99.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>Adenosine triphosphate + Water + L-Isoleucine &gt; ADP + Hydrogen ion + L-Isoleucine + Phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-15-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + Water + L-Isoleucine &gt; ADP + Hydrogen ion + L-Isoleucine + Phosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-15-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + tRNA(Ile) + tRNA(Ile) &lt;&gt; Adenosine monophosphate + L-Isoleucyl-tRNA(Ile) + Pyrophosphate + L-Isoleucyl-tRNA(Ile)</reaction_text>
    <kegg_reaction_id>R03656</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>alpha-Ketoglutarate + L-Isoleucine &lt;&gt; 3-Methyl-2-oxovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id>R02199</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + tRNA(Ile) &lt;&gt; Adenosine monophosphate + Pyrophosphate + L-Isoleucyl-tRNA(Ile)</reaction_text>
    <kegg_reaction_id>R03656</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + Water &gt; ADP + Phosphate + L-Isoleucine + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-15-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + Water &gt; ADP + Phosphate + L-Isoleucine + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-15-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>L-Isoleucine + Oxoglutaric acid &lt;&gt; 3-Methyl-2-oxovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>BRANCHED-CHAINAMINOTRANSFERILEU-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>L-Isoleucine + Oxoglutaric acid &gt; (S)-3-methyl-2-oxopentanoate + L-Glutamate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + tRNA(Ile) &gt; Adenosine monophosphate + Pyrophosphate + L-isoleucyl-tRNA(Ile)</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>L-Isoleucine + Adenosine triphosphate + Hydrogen ion + tRNA(Ile) + L-Isoleucine &gt; L-Isoleucyl-tRNA(Ile) + Adenosine monophosphate + Pyrophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002832</pw_reaction_id>
    <reaction_text>3-Methyl-2-oxovaleric acid + L-Glutamic acid + 3-Methyl-2-oxovaleric acid + L-Glutamate &gt; Oxoglutaric acid + L-Isoleucine + L-Isoleucine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002928</pw_reaction_id>
    <reaction_text>L-Isoleucine + Adenosine triphosphate + Water + L-Isoleucine &gt; L-Isoleucine + Adenosine diphosphate + Phosphate + Hydrogen ion + ADP</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_RCT000106</pw_reaction_id>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + tRNA(Ile) &lt;&gt; Adenosine monophosphate + L-Isoleucyl-tRNA(Ile) + Pyrophosphate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>alpha-Ketoglutarate + L-Isoleucine &lt;&gt;3 3-Methyl-2-oxovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Isoleucine + tRNA(Ile) &lt;&gt; Adenosine monophosphate + L-Isoleucyl-tRNA(Ile) + Pyrophosphate</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>150.0</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>600000</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>220.0</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>880000</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>170.0</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>680000</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>33.1</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>132400</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>
    <growth_media>Luria-Bertani (LB) media</growth_media>
    <growth_system>Shake flask</growth_system>
    <concentration>172.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal>true</internal>
    <error>23.0</error>
    <temperature>37 oC</temperature>
    <strain>BL21 DE3</strain>
    <growth_status>Stationary phase cultures (overnight culture)</growth_status>
    <molecules>687600</molecules>
    <molecules_error>92000</molecules_error>
    <reference>
      <reference_text>Lin, Z., Johnson, L. C., Weissbach, H., Brot, N., Lively, M. O., Lowther, W. T. (2007). "Free methionine-(R)-sulfoxide reductase from Escherichia coli reveals a new GAF domain function." Proc Natl Acad Sci U S A 104:9597-9602.</reference_text>
      <pubmed_id>17535911</pubmed_id>
    </reference>
    <growth_media>Luria-Bertani (LB) media</growth_media>
    <growth_system>Shake flask</growth_system>
    <concentration>178.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal>true</internal>
    <error>23.26</error>
    <temperature>37 oC</temperature>
    <strain>BL21 DE3</strain>
    <growth_status>Stationary phase cultures (overnight culture)</growth_status>
    <molecules>712000</molecules>
    <molecules_error>93038</molecules_error>
    <reference>
      <reference_text>Lin, Z., Johnson, L. C., Weissbach, H., Brot, N., Lively, M. O., Lowther, W. T. (2007). "Free methionine-(R)-sulfoxide reductase from Escherichia coli reveals a new GAF domain function." Proc Natl Acad Sci U S A 104:9597-9602.</reference_text>
      <pubmed_id>17535911</pubmed_id>
    </reference>
  </concentrations>
</compound>
