<?xml version="1.0" encoding="UTF-8"?>
<compound>
  <version>2.0</version>
  <creation_date>2012-05-31 13:01:47 -0600</creation_date>
  <update_date>2015-09-13 12:56:09 -0600</update_date>
  <accession>ECMDB00883</accession>
  <m2m_id>M2MDB000196</m2m_id>
  <name>L-Valine</name>
  <description>Valine is an alpha-amino acid with the chemical formula HO2CCH(NH2)CH(CH3)2. L-Valine is one of 20 proteinogenic amino acids. Its codons are GUU, GUC, GUA, and GUG. This amino acid is classified as nonpolar. Along with leucine and isoleucine, valine is a branched-chain amino acid. It is named after the plant valerian. (Wikipedia)</description>
  <synonyms>
    <synonym>(2S)-2-Amino-3-methylbutanoate</synonym>
    <synonym>(2S)-2-Amino-3-methylbutanoic acid</synonym>
    <synonym>(S)-2-amino-3-methyl-Butanoate</synonym>
    <synonym>(S)-2-amino-3-methyl-Butanoic acid</synonym>
    <synonym>(S)-2-Amino-3-methylbutanoate</synonym>
    <synonym>(S)-2-Amino-3-methylbutanoic acid</synonym>
    <synonym>(S)-2-Amino-3-methylbutyrate</synonym>
    <synonym>(S)-2-Amino-3-methylbutyric acid</synonym>
    <synonym>(S)-a-Amino-b-methylbutyrate</synonym>
    <synonym>(S)-a-Amino-b-methylbutyric acid</synonym>
    <synonym>(S)-alpha-Amino-beta-methylbutyrate</synonym>
    <synonym>(S)-alpha-Amino-beta-methylbutyric acid</synonym>
    <synonym>(S)-Valine</synonym>
    <synonym>(S)-α-amino-β-Methylbutyrate</synonym>
    <synonym>(S)-α-amino-β-Methylbutyric acid</synonym>
    <synonym>2-Amino-3-methylbutanoate</synonym>
    <synonym>2-Amino-3-methylbutanoic acid</synonym>
    <synonym>2-Amino-3-methylbutyrate</synonym>
    <synonym>2-Amino-3-methylbutyric acid</synonym>
    <synonym>L-(+)-a-Aminoisovalerate</synonym>
    <synonym>L-(+)-a-Aminoisovaleric acid</synonym>
    <synonym>L-(+)-alpha-Aminoisovalerate</synonym>
    <synonym>L-(+)-alpha-Aminoisovaleric acid</synonym>
    <synonym>L-(+)-α-Aminoisovalerate</synonym>
    <synonym>L-(+)-α-Aminoisovaleric acid</synonym>
    <synonym>L-a-Amino-b-methylbutyrate</synonym>
    <synonym>L-a-Amino-b-methylbutyric acid</synonym>
    <synonym>L-alpha-Amino-beta-methylbutyrate</synonym>
    <synonym>L-alpha-Amino-beta-methylbutyric acid</synonym>
    <synonym>L-Valine</synonym>
    <synonym>L-α-amino-β-Methylbutyrate</synonym>
    <synonym>L-α-amino-β-Methylbutyric acid</synonym>
    <synonym>V</synonym>
    <synonym>Val</synonym>
    <synonym>Valine</synonym>
  </synonyms>
  <chemical_formula>C5H11NO2</chemical_formula>
  <average_molecular_weight>117.1463</average_molecular_weight>
  <monisotopic_moleculate_weight>117.078978601</monisotopic_moleculate_weight>
  <iupac_name>(2S)-2-amino-3-methylbutanoic acid</iupac_name>
  <traditional_iupac>L-valine</traditional_iupac>
  <cas_registry_number>72-18-4</cas_registry_number>
  <smiles>CC(C)[C@H](N)C(O)=O</smiles>
  <inchi>InChI=1S/C5H11NO2/c1-3(2)4(6)5(7)8/h3-4H,6H2,1-2H3,(H,7,8)/t4-/m0/s1</inchi>
  <inchikey>KZSNJWFQEVHDMF-BYPYZUCNSA-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>-2.29</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>logs</kind>
      <value>0.26</value>
      <source>ALOGPS</source>
    </property>
    <property>
      <kind>solubility</kind>
      <value>2.14e+02 g/l</value>
      <source>ALOGPS</source>
    </property>
  </predicted_properties>
  <experimental_properties>
    <property>
      <kind>melting_point</kind>
      <value>295-300 oC</value>
    </property>
  </experimental_properties>
  <property>
    <kind>logp</kind>
    <value>-2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_acidic</kind>
    <value>2.72</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>pka_strongest_basic</kind>
    <value>9.6</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>iupac</kind>
    <value>(2S)-2-amino-3-methylbutanoic acid</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>average_mass</kind>
    <value>117.1463</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>mono_mass</kind>
    <value>117.078978601</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>smiles</kind>
    <value>CC(C)[C@H](N)C(O)=O</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>formula</kind>
    <value>C5H11NO2</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchi</kind>
    <value>InChI=1S/C5H11NO2/c1-3(2)4(6)5(7)8/h3-4H,6H2,1-2H3,(H,7,8)/t4-/m0/s1</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>inchikey</kind>
    <value>KZSNJWFQEVHDMF-BYPYZUCNSA-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>29.49</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>polarizability</kind>
    <value>12.19</value>
    <source>ChemAxon</source>
  </property>
  <property>
    <kind>rotatable_bond_count</kind>
    <value>2</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>Alanine, aspartate and glutamate metabolism</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00250</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Valine, leucine and isoleucine biosynthesis</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00290</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Pantothenate and CoA biosynthesis</name>
      <description>The CoA biosynthesis requires compounds from two other pathways: aspartate metabolism and valine biosynthesis. It requires a Beta-Alanine and R-pantoate.
The compound (R)-pantoate is generated in two reactions, as shown by the interaction of alpha-ketoisovaleric acid, 5,10 methylene-THF and water through a 3-methyl-2-oxobutanoate hydroxymethyltransferase resulting in a tetrahydrofolic acid and a 2-dehydropantoate. This compound interacts with hydrogen through a NADPH driven acetohydroxy acid isomeroreductase resulting in the release of NADP and R-pantoate.
On the other hand L-aspartic acid interacts with a hydrogen ion and gets decarboxylated through an Aspartate 1- decarboxylase resulting in a carbon dioxide and a Beta-alanine.
Beta-alanine and R-pantoate interact with an ATP driven pantothenate synthetase resulting in pyrophosphate, AMP, hydrogen ion and pantothenic acid.
Pantothenic acid is phosphorylated through a ATP-driven pantothenate kinase resulting in a ADP, a hydrogen ion and D-4'-Phosphopantothenate. This compound interacts with a CTP and a L-cysteine resulting in a fused 4'-phosphopantothenoylcysteine decarboxylase and phosphopantothenoylcysteine synthetase resulting in a hydrogen ion, a pyrophosphate, a CMP and 4-phosphopantothenoylcysteine. 
The latter compound interacts with a hydrogen ion through a fused 4'-phosphopantothenoylcysteine decarboxylase and phosphopantothenoylcysteine synthetase resulting in a carbon dioxide release and a  4-phosphopantetheine. This compound interacts with an ATP, hydrogen ion and an phosphopantetheine adenylyltransferase resulting in a release of pyrophosphate, and dephospho-CoA.
Dephospho-CoA reacts with an ATP driven dephospho-CoA kinase resulting in a ADP , a hydrogen ion and a Coenzyme A.

 . The latter is converted into (R)-4'-phosphopantothenate is two steps, involving a β-alanine ligase and a kinase. In most organsims the ligase acts before the kinase (EC 6.3.2.1, pantoate—β-alanine ligase (AMP-forming) followed by EC 2.7.1.33, pantothenate kinase, as described in phosphopantothenate biosynthesis I and phosphopantothenate biosynthesis II. However, in archaea the order is reversed, and EC 2.7.1.169, pantoate kinase acts before EC 6.3.2.36, 4-phosphopantoate—β-alanine ligase, as described in phosphopantothenate biosynthesis III.

The kinases are feedback inhibited by CoA itself, accounting for the primary regulatory mechanism of CoA biosynthesis. The addition of L-cysteine to (R)-4'-phosphopantothenate, resulting in the formation of R-4'-phosphopantothenoyl-L-cysteine (PPC), is followed by decarboxylation of PPC to 4'-phosphopantetheine. The ultimate reaction is catalyzed by EC 2.7.1.24, dephospho-CoA kinase, which converts 4'-phosphopantetheine to CoA. All enzymes of this pathway are essential for growth.

The reactions in the biosynthetic route towards CoA are identical in most organisms, although there are differences in the functionality of the involved enzymes. In plants every step is catalyzed by single monofunctional enzymes, whereas in bacteria and mammals bifunctional enzymes are often employed [Rubio06].</description>
      <pathwhiz_id>PW000828</pathwhiz_id>
      <kegg_map_id>ec00770</kegg_map_id>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Aminoacyl-tRNA biosynthesis</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>ec00970</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>Propanoate metabolism</name>
      <description>
Starting from L-threonine, this compound is deaminated through a threonine deaminase resulting in a hydrogen ion, a water molecule and a (2z)-2-aminobut-2-enoate. The latter compound then isomerizes to a 2-iminobutanoate, This compound then reacts spontaneously with hydrogen ion and a water molecule resulting in a ammonium and a 2-Ketobutyric acid. The latter compound interacts with CoA through a pyruvate formate-lyase / 2-ketobutyrate formate-lyase resulting in a formic acid and a propionyl-CoA. 
Propionyl-CoA can then be processed either into a 2-methylcitric acid or into a propanoyl phosphate.
Propionyl-CoA interacts with oxalacetic acid and a water molecule through a 2-methylcitrate synthase resulting in a hydrogen ion, a CoA and a 2-Methylcitric acid.The latter compound is dehydrated through a 2-methylcitrate dehydratase resulting in a water molecule and cis-2-methylaconitate. The latter compound is then dehydrated by a 
bifunctional aconitate hydratase 2 and 2-methylisocitrate dehydratase  resulting in a water molecule and methylisocitric acid. The latter compound is then processed by 2-methylisocitrate lyase resulting in a release of succinic acid and pyruvic acid.
Succinic acid can then interact with a propionyl-CoA through a propionyl-CoA:succinate CoA transferase resulting in a propionic acid and a succinyl CoA. Succinyl-CoA is then isomerized through a methylmalonyl-CoA mutase resulting in a methylmalonyl-CoA. This compound is then decarboxylated through a methylmalonyl-CoA decarboxylase resulting in a release of Carbon dioxide and Propionyl-CoA.
ropionyl-CoA interacts with a phosphate through a phosphate acetyltransferase / phosphate propionyltransferase resulting in a CoA and a propanoyl phosphate.
Propionyl-CoA can react with a phosphate through a phosphate acetyltransferase / phosphate propionyltransferase resulting in a CoA and a propanoyl phosphate. The latter compound is then dephosphorylated through a ADP driven acetate kinase/propionate kinase protein complex resulting in an ATP and Propionic acid.
Propionic acid can be processed by a reaction with CoA through a ATP-driven propionyl-CoA synthetase resulting in a pyrophosphate, an AMP and a propionyl-CoA.</description>
      <pathwhiz_id>PW000940</pathwhiz_id>
      <kegg_map_id>ec00640</kegg_map_id>
      <subject>Metabolic</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>Metabolic pathways</name>
      <description/>
      <pathwhiz_id/>
      <kegg_map_id>eco01100</kegg_map_id>
      <subject/>
    </pathway>
    <pathway>
      <name>L-alanine metabolism</name>
      <description>L-alanine is an essential component of proteins and peptidoglycan. The latter also contains about three molecules of D-alanine for every L-alanine. Only about 10 percent of the total alanine synthesized flows into peptidoglycan.

There are at least 3 ways to begin the biosynthesis of alanine. 
The first method for alanine biosynthesis begins with L-cysteine produced from L-cysteine biosynthesis pathway. L-cysteine reacts with an [L-cysteine desulfurase] L-cysteine persulfide through a cysteine desulfurase resulting in a release of [L-cysteine desulfurase] l-cysteine persulfide and L-alanine.
The second method starts with pyruvic acid reacting with L-glutamic acid through a glutamate-pyruvate aminotransferase resulting in a oxoglutaric acid and L-alanine.
The third method starts with L-glutamic acid interacting with Alpha-ketoisovaleric acid through a valine transaminase resulting in an oxoglutaric acid and L-valine. L-valine reacts with pyruvic acid through a valine-pyruvate aminotransferase resulting Alpha-ketoisovaleric acid and L-alanine.
This first step of the pathway, which can be catalyzed by either of two racemases( biosynthetic or catabolic), also serves an essential role in biosynthesis because its product, D-alanine, is an essential component of cell wall peptidoglycan (murein). D-alanine  is metabolized  by an ATP driven D-alanine ligase A and B resulting in D-alanyl-D-alanine. This product is incorporated into the peptidoglycan biosynthesis.
L-alanine is metabolized with alanine racemase, either catabolic or metabolic resulting in a D-alanine. This compound reacts with water and a quinone through a 
D-amino acid dehydrogenase  resulting in Pyruvic acid, hydroquinone and ammonium, thus entering the central metabolism and thereby can serve as a total source of carbon and energy. This pathway is unique among those through which L-amino acids are degraded, in that the L form must first be converted to the D form. 
D-alanine, is an essential component of cell wall peptidoglycan (murein). The role of the alr racemase is predominately biosynthetic: it is produced constitutively in small amounts. The role of the dadX racemase is degradative: it is induced to high levels by alanine and is subject to catabolite repression.
</description>
      <pathwhiz_id>PW000788</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Secondary Metabolites: Valine and I-leucine biosynthesis from pyruvate</name>
      <description>The biosynthesis of Valine and L-leucine from pyruvic acid starts with pyruvic acid interacting with a hydrogen ion through a acetolactate synthase / acetohydroxybutanoate synthase resulting in a release of a carbon dioxide, a (S)-2-acetolactate. The latter compound then interacts with a hydrogen ion through a NADPH-driven acetohydroxy acid isomeroreductase resulting in the release of a NADP, a (R) 2,3-dihydroxy-3-methylvalerate. The latter compound is then dehydrated by a dihydroxy acid dehydratase resulting in the release of a water molecule an 3-methyl-2-oxovaleric acid. 
The 3-methyl-2-oxovaleric acid can produce an L-valine by interacting with a L-glutamic acid through a Valine Transaminase resulting in the release of a Oxoglutaric acid and a L-valine.
The 3-methyl-2-oxovaleric acid then interacts with an acetyl-CoA and a water molecule through a 2-isopropylmalate synthase resulting in the release of a hydrogen ion, a Coenzyme A and a 2-Isopropylmalic acid. The isopropylimalic acid is then hydrated by interacting with a isopropylmalate isomerase resulting in a 3-isopropylmalate. This compound then interacts with an NAD driven 3-isopropylmalate dehydrogenase resulting in a NADH, a hydrogen ion and a 2-isopropyl-3-oxosuccinate. The latter compound then interacts with hydrogen ion spontaneously resulting in a carbon dioxide and a ketoleucine. The ketoleucine then interacts with a L-glutamic acid through a branched-chain amino-acid aminotransferase resulting in the oxoglutaric acid and L-leucine.</description>
      <pathwhiz_id>PW000978</pathwhiz_id>
      <kegg_map_id/>
      <subject>Metabolic</subject>
    </pathway>
    <pathway>
      <name>Valine Biosynthesis</name>
      <description>
The pathway of valine biosynthesis starts with pyruvic acid interacting with a hydrogen ion through a acetolactate synthase / acetohydroxybutanoate synthase or a acetohydroxybutanoate synthase / acetolactate synthase resulting in the release of carbon dioxide and (S)-2-acetolactate. The latter compound then interacts with a hydrogen ion through an NADPH driven 
acetohydroxy acid isomeroreductase resulting in the release of a NADP and an (R) 2,3-dihydroxy-3-methylvalerate. The latter compound is then dehydrated by a 
dihydroxy acid dehydratase resulting in the release of water and isovaleric acid. Isovaleric acid interacts with an L-glutamic acid through a Valine Transaminase resulting in a oxoglutaric acid and an L-valine.
L-valine is then transported into the periplasmic space through a L-valine efflux transporter.</description>
      <pathwhiz_id>PW000812</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>tRNA charging</name>
      <ecocyc_pathway_id>TRNA-CHARGING-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>alanine biosynthesis I</name>
      <ecocyc_pathway_id>ALANINE-VALINESYN-PWY</ecocyc_pathway_id>
    </pathway>
    <pathway>
      <name>valine biosynthesis</name>
      <ecocyc_pathway_id>VALSYN-PWY</ecocyc_pathway_id>
    </pathway>
  </pathways>
  <spectra>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>662</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>663</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>664</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>665</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>666</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>912</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>967</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>2760</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30029</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30030</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30383</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30384</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30615</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30616</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30725</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>30802</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>31254</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>31255</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>37823</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>134289</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>142023</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1080931</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1080933</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::CMs</type>
      <spectrum_id>1080935</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::EiMs</type>
      <spectrum_id>1986</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1279</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>1582</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>4778</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7862</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7863</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7864</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7865</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7866</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7867</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7868</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7869</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7870</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7871</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7872</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7873</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7874</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7875</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7876</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7877</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7878</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7879</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7880</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>7881</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrOneD</type>
      <spectrum_id>166439</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1244</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1245</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>1246</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4762</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4763</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4764</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4765</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4766</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4767</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4768</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4769</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4770</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4771</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4772</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4773</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4774</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4775</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4776</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4777</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4783</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4784</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>4785</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178806</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178807</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::MsMs</type>
      <spectrum_id>178808</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1041</spectrum_id>
    </spectrum>
    <spectrum>
      <type>Specdb::NmrTwoD</type>
      <spectrum_id>1524</spectrum_id>
    </spectrum>
  </spectra>
  <hmdb_id>HMDB00883</hmdb_id>
  <pubchem_compound_id>1182</pubchem_compound_id>
  <chemspider_id>6050</chemspider_id>
  <kegg_id>C00183</kegg_id>
  <chebi_id>16414</chebi_id>
  <biocyc_id>VAL</biocyc_id>
  <het_id>VAL_LFZW</het_id>
  <wikipidia>valine</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>
      <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>Shoemaker JD, Elliott WH: Automated screening of urine samples for carbohydrates, organic and amino acids after treatment with urease. J Chromatogr. 1991 Jan 2;562(1-2):125-38.</reference_text>
      <pubmed_id>2026685</pubmed_id>
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      <reference_text>Silwood CJ, Lynch E, Claxson AW, Grootveld MC: 1H and (13)C NMR spectroscopic analysis of human saliva.  J Dent Res. 2002 Jun;81(6):422-7.</reference_text>
      <pubmed_id>12097436</pubmed_id>
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    <reference>
      <reference_text>Nicholson JK, O'Flynn MP, Sadler PJ, Macleod AF, Juul SM, Sonksen PH: Proton-nuclear-magnetic-resonance studies of serum, plasma and urine from fasting normal and diabetic subjects. Biochem J. 1984 Jan 15;217(2):365-75.</reference_text>
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      <reference_text>Bairaktari E, Katopodis K, Siamopoulos KC, Tsolas O: Paraquat-induced renal injury studied by 1H nuclear magnetic resonance spectroscopy of urine. Clin Chem. 1998 Jun;44(6 Pt 1):1256-61.</reference_text>
      <pubmed_id>9625050</pubmed_id>
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    <reference>
      <reference_text>Wevers RA, Engelke U, Wendel U, de Jong JG, Gabreels FJ, Heerschap A: Standardized method for high-resolution 1H-NMR of cerebrospinal fluid.  Clin Chem. 1995 May;41(5):744-51.</reference_text>
      <pubmed_id>7729054</pubmed_id>
    </reference>
    <reference>
      <reference_text>Hagenfeldt L, Bjerkenstedt L, Edman G, Sedvall G, Wiesel FA: Amino acids in plasma and CSF and monoamine metabolites in CSF: interrelationship in healthy subjects. J Neurochem. 1984 Mar;42(3):833-7.</reference_text>
      <pubmed_id>6198473</pubmed_id>
    </reference>
    <reference>
      <reference_text>Peng CT, Wu KH, Lan SJ, Tsai JJ, Tsai FJ, Tsai CH: Amino acid concentrations in cerebrospinal fluid in children with acute lymphoblastic leukemia undergoing chemotherapy. Eur J Cancer. 2005 May;41(8):1158-63. Epub 2005 Apr 14.</reference_text>
      <pubmed_id>15911239</pubmed_id>
    </reference>
    <reference>
      <reference_text>Cynober LA: Plasma amino acid levels with a note on membrane transport: characteristics, regulation, and metabolic significance. Nutrition. 2002 Sep;18(9):761-6.</reference_text>
      <pubmed_id>12297216</pubmed_id>
    </reference>
    <reference>
      <reference_text>Rainesalo S, Keranen T, Palmio J, Peltola J, Oja SS, Saransaari P: Plasma and cerebrospinal fluid amino acids in epileptic patients.  Neurochem Res. 2004 Jan;29(1):319-24.</reference_text>
      <pubmed_id>14992292</pubmed_id>
    </reference>
    <reference>
      <reference_text>Deng C, Shang C, Hu Y, Zhang X: Rapid diagnosis of phenylketonuria and other aminoacidemias by quantitative analysis of amino acids in neonatal blood spots by gas chromatography-mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci. 2002 Jul 25;775(1):115-20.</reference_text>
      <pubmed_id>12101068</pubmed_id>
    </reference>
    <reference>
      <reference_text>Stickel F, Osterreicher CH, Datz C, Ferenci P, Wolfel M, Norgauer W, Kraus MR, Wrba F, Hellerbrand C, Schuppan D: Prediction of progression to cirrhosis by a glutathione S-transferase P1 polymorphism in subjects with hereditary hemochromatosis. Arch Intern Med. 2005 Sep 12;165(16):1835-40.</reference_text>
      <pubmed_id>16157826</pubmed_id>
    </reference>
    <reference>
      <reference_text>Wudy SA, Hartmann M, Solleder C, Homoki J: Determination of 17alpha-hydroxypregnenolone in human plasma by routine isotope dilution mass spectrometry using benchtop gas chromatography-mass selective detection. Steroids. 2001 Oct;66(10):759-62.</reference_text>
      <pubmed_id>11522338</pubmed_id>
    </reference>
    <reference>
      <reference_text>Szpetnar M, Pasternak K, Boguszewska A: Branched chain amino acids (BCAAs) in heart diseases (ischaemic heart disease and myocardial infarction). Ann Univ Mariae Curie Sklodowska [Med]. 2004;59(2):91-5.</reference_text>
      <pubmed_id>16146056</pubmed_id>
    </reference>
    <reference>
      <reference_text>Hongpaisan J: Inhibition of proliferation of contaminating fibroblasts by D-valine in cultures of smooth muscle cells from human myometrium. Cell Biol Int. 2000;24(1):1-7.</reference_text>
      <pubmed_id>10826768</pubmed_id>
    </reference>
    <reference>
      <reference_text>Deligezer U, Akisik EE, Dalay N: Homozygosity at the C677T of the MTHFR gene is associated with increased breast cancer risk in the Turkish population. In Vivo. 2005 Sep-Oct;19(5):889-93.</reference_text>
      <pubmed_id>16097444</pubmed_id>
    </reference>
    <reference>
      <reference_text>McInturff JE, Wang SJ, Machleidt T, Lin TR, Oren A, Hertz CJ, Krutzik SR, Hart S, Zeh K, Anderson DH, Gallo RL, Modlin RL, Kim J: Granulysin-derived peptides demonstrate antimicrobial and anti-inflammatory effects against Propionibacterium acnes. J Invest Dermatol. 2005 Aug;125(2):256-63.</reference_text>
      <pubmed_id>16098035</pubmed_id>
    </reference>
    <reference>
      <reference_text>Jensen PK, Jacobsen NO: Studies of D-amino acid oxidase activity in human epidermis and cultured human epidermal cells. Arch Dermatol Res. 1984;276(1):57-64.</reference_text>
      <pubmed_id>6142701</pubmed_id>
    </reference>
    <reference>
      <reference_text>Kurpad AV, Regan MM, Raj TD, Gnanou JV, Rao VN, Young VR: The daily valine requirement of healthy adult Indians determined by the 24-h indicator amino acid balance approach. Am J Clin Nutr. 2005 Aug;82(2):373-9.</reference_text>
      <pubmed_id>16087981</pubmed_id>
    </reference>
  </general_references>
  <synthesis_reference>Kinoshita, Shukuo; Udaka, Shigezo.  L-Valine production by fermentation.    (1962),     2 pp.</synthesis_reference>
  <msds_url>http://hmdb.ca/system/metabolites/msds/000/000/797/original/HMDB00883.pdf?1358894699</msds_url>
  <enzymes>
    <enzyme>
      <name>Valyl-tRNA synthetase</name>
      <uniprot_id>P07118</uniprot_id>
      <uniprot_name>SYV_ECOLI</uniprot_name>
      <gene_name>valS</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P07118.xml</protein_url>
    </enzyme>
    <enzyme>
      <name>Valine--pyruvate aminotransferase</name>
      <uniprot_id>P09053</uniprot_id>
      <uniprot_name>AVTA_ECOLI</uniprot_name>
      <gene_name>avtA</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P09053.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>Uncharacterized aminotransferase yfbQ</name>
      <uniprot_id>P0A959</uniprot_id>
      <uniprot_name>YFBQ_ECOLI</uniprot_name>
      <gene_name>yfbQ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P0A959.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>Uncharacterized protein ygaH</name>
      <uniprot_id>P43667</uniprot_id>
      <uniprot_name>YGAH_ECOLI</uniprot_name>
      <gene_name>ygaH</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P43667.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>Inner membrane protein ygaZ</name>
      <uniprot_id>P76630</uniprot_id>
      <uniprot_name>YGAZ_ECOLI</uniprot_name>
      <gene_name>ygaZ</gene_name>
      <protein_url>http://ecmdb.ca/proteins/P76630.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-Valine &gt; ADP + Hydrogen ion + Phosphate + L-Valine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-36-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + Water + L-Valine &gt; ADP + Hydrogen ion + Phosphate + L-Valine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-36-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>alpha-Ketoisovaleric acid + L-Alanine &lt;&gt; Pyruvic acid + L-Valine + a-Ketoisovaleric acid</reaction_text>
    <kegg_reaction_id>R01215</kegg_reaction_id>
    <ecocyc_id>VALINE-PYRUVATE-AMINOTRANSFER-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>alpha-Ketoglutarate + L-Valine &lt;&gt; alpha-Ketoisovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id>R01214</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + tRNA(Val) + L-Valine + tRNA(Val) &lt;&gt; Adenosine monophosphate + Pyrophosphate + L-Valyl-tRNA(Val) + L-Valyl-tRNA(Val)</reaction_text>
    <kegg_reaction_id>R03665</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>L-Valine + Pyruvic acid &lt;&gt; alpha-Ketoisovaleric acid + L-Alanine</reaction_text>
    <kegg_reaction_id>R01215</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Valine + tRNA(Val) &lt;&gt; Adenosine monophosphate + Pyrophosphate + L-Valyl-tRNA(Val)</reaction_text>
    <kegg_reaction_id>R03665</kegg_reaction_id>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Valine + Water &gt; ADP + Phosphate + L-Valine + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-36-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Valine + Water &gt; ADP + Phosphate + L-Valine + Hydrogen ion</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>ABC-36-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>L-Valine + Oxoglutaric acid &lt;&gt; alpha-Ketoisovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id>BRANCHED-CHAINAMINOTRANSFERVAL-RXN</ecocyc_id>
    <pw_reaction_id/>
    <reaction_text>L-Valine + Pyruvic acid &gt; a-Ketoisovaleric acid + L-Alanine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>L-Valine + Oxoglutaric acid &gt; a-Ketoisovaleric acid + L-Glutamate</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>Adenosine triphosphate + L-Valine + tRNA(Val) &gt; Adenosine monophosphate + Pyrophosphate + L-valyl-tRNA(Val)</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id/>
    <reaction_text>L-Valine + Pyruvic acid + L-Valine &gt; L-Alanine + a-Ketoisovaleric acid + L-Alanine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002662</pw_reaction_id>
    <reaction_text>a-Ketoisovaleric acid + L-Glutamic acid + L-Glutamate &gt; Oxoglutaric acid + L-Valine + L-Valine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002663</pw_reaction_id>
    <reaction_text>Isovaleric acid + L-Glutamic acid + L-Glutamate &gt; Oxoglutaric acid + L-Valine + L-Valine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002886</pw_reaction_id>
    <reaction_text>3-Methyl-2-oxovaleric acid + L-Glutamic acid + 3-Methyl-2-oxovaleric acid + L-Glutamate &gt; Oxoglutaric acid + L-Valine + L-Valine</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R003714</pw_reaction_id>
    <reaction_text>L-Valine + Adenosine triphosphate + Hydrogen ion + tRNA(Val) + L-Valine &gt; Adenosine monophosphate + Pyrophosphate + L-Valyl-tRNA(Val)</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_R002831</pw_reaction_id>
    <reaction_text>L-Valine + Adenosine triphosphate + Water + L-Valine &gt; L-Valine + Adenosine diphosphate + Pyrophosphate + Hydrogen ion + ADP</reaction_text>
    <kegg_reaction_id/>
    <ecocyc_id/>
    <pw_reaction_id>PW_RCT000104</pw_reaction_id>
    <reaction_text>Adenosine triphosphate + tRNA(Val) + L-Valine &lt;&gt; Adenosine monophosphate + Pyrophosphate + L-Valyl-tRNA(Val)</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>4020.0</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>16080000</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>2290.0</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>9160000</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>1070.0</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>4280000</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>181.0</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>724000</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>1645.0</concentration>
    <concentration_units>uM</concentration_units>
    <internal>true</internal>
    <error>134.0</error>
    <temperature>37 oC</temperature>
    <strain>BL21 DE3</strain>
    <growth_status>Stationary phase cultures (overnight culture)</growth_status>
    <molecules>6580000</molecules>
    <molecules_error>536000</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>1623.33</concentration>
    <concentration_units>uM</concentration_units>
    <internal>true</internal>
    <error>107.86</error>
    <temperature>37 oC</temperature>
    <strain>BL21 DE3</strain>
    <growth_status>Stationary phase cultures (overnight culture)</growth_status>
    <molecules>6493333</molecules>
    <molecules_error>431432</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>
