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The biosynthesis of the sulfur containing amino acid methionine critical for protein biosynthesis. 
Website=www.biocyc.org/Ecoli/Pathways/
free text=Biochemistry (text)  Voet and Voet
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<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  succinyl-CoA
Synonym:  Synonym not specified
Accession:  S03816
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>succinyl-CoA</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s7" id="s7" name="CoA" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  CoA
Synonym:  Synonym not specified
Accession:  S03818
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>CoA</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s8" id="s8" name="cysteine" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  cysteine
Synonym:  Synonym not specified
Accession:  S03808
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>cysteine</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s9" id="s9" name="succinate" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  succinate
Synonym:  Synonym not specified
Accession:  S03813
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>succinate</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s10" id="s10" name="H_sub_2_endsub_O" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  H2O
Synonym:  Synonym not specified
Accession:  S03811
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>H_sub_2_endsub_O</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s11" id="s11" name="pyruvate" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  pyruvate
Synonym:  Synonym not specified
Accession:  S03810
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>pyruvate</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s12" id="s12" name="NH_sub_3" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  NH3
Synonym:  Synonym not specified
Accession:  S03807
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>NH_sub_3</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s18" id="s18" name="Homocysteine_br_transmethylase" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  Homocysteine transmethylase
Synonym:  Synonym not specified
Accession:  P03024
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>PROTEIN</celldesigner:class>
<celldesigner:proteinReference>p4</celldesigner:proteinReference>
</celldesigner:speciesIdentity>
<celldesigner:listOfCatalyzedReactions>
<celldesigner:catalyzed reaction="r4"/>
</celldesigner:listOfCatalyzedReactions>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s17" id="s17" name="Cystathionine_br_lyase" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  Cystathionine lyase
Synonym:  Synonym not specified
Accession:  P03025
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>PROTEIN</celldesigner:class>
<celldesigner:proteinReference>p3</celldesigner:proteinReference>
</celldesigner:speciesIdentity>
<celldesigner:listOfCatalyzedReactions>
<celldesigner:catalyzed reaction="r3"/>
</celldesigner:listOfCatalyzedReactions>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s15" id="s15" name="Homoserine_br_succinyltransferase" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  Homoserine succinyltransferase
Synonym:  Synonym not specified
Accession:  P03023
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>PROTEIN</celldesigner:class>
<celldesigner:proteinReference>p1</celldesigner:proteinReference>
</celldesigner:speciesIdentity>
<celldesigner:listOfCatalyzedReactions>
<celldesigner:catalyzed reaction="r1"/>
</celldesigner:listOfCatalyzedReactions>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s16" id="s16" name="O-Succinyl homoserine_br_lyase" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  O-Succinyl homoserine lyase
Synonym:  Synonym not specified
Accession:  P03026
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>PROTEIN</celldesigner:class>
<celldesigner:proteinReference>p2</celldesigner:proteinReference>
</celldesigner:speciesIdentity>
<celldesigner:listOfCatalyzedReactions>
<celldesigner:catalyzed reaction="r2"/>
</celldesigner:listOfCatalyzedReactions>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s14" id="s14" name="THF" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  THF
Synonym:  Synonym not specified
Accession:  S03819
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>THF</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
<species metaid="s13" id="s13" name="5-CH3-THF" compartment="default" initialAmount="0">
<notes>
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
Long Name:  5-CH3-THF
Synonym:  Synonym not specified
Accession:  S03817
</body>
</html>
</notes>
<annotation>
<celldesigner:extension>
<celldesigner:positionToCompartment>inside</celldesigner:positionToCompartment>
<celldesigner:speciesIdentity>
<celldesigner:class>SIMPLE_MOLECULE</celldesigner:class>
<celldesigner:name>5-CH3-THF</celldesigner:name>
</celldesigner:speciesIdentity>
</celldesigner:extension>
</annotation>
</species>
</listOfSpecies>
<listOfReactions>
<reaction metaid="r1" id="r1" reversible="false">
<annotation>
<celldesigner:extension>
<celldesigner:reactionType>STATE_TRANSITION</celldesigner:reactionType>
<celldesigner:baseReactants>
<celldesigner:baseReactant species="s1" alias="a1"/>
</celldesigner:baseReactants>
<celldesigner:baseProducts>
<celldesigner:baseProduct species="s2" alias="a2"/>
</celldesigner:baseProducts>
<celldesigner:listOfReactantLinks>
<celldesigner:reactantLink reactant="s6" alias="a6" targetLineIndex="-1,0">
<celldesigner:linkAnchor position="E"/>
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:reactantLink>
</celldesigner:listOfReactantLinks>
<celldesigner:listOfProductLinks>
<celldesigner:productLink product="s7" alias="a7" targetLineIndex="-1,1">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:productLink>
</celldesigner:listOfProductLinks>
<celldesigner:connectScheme connectPolicy="direct" rectangleIndex="1">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
<celldesigner:lineDirection index="1" value="unknown"/>
<celldesigner:lineDirection index="2" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:editPoints>0.3333333333333333,0.0 0.6666666666666665,0.0</celldesigner:editPoints>
<celldesigner:line width="1.0" color="ff000000"/>
<celldesigner:listOfModification>
<celldesigner:modification type="CATALYSIS" modifiers="s15" aliases="a15" targetLineIndex="-1,2">
<celldesigner:connectScheme connectPolicy="direct">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:line width="1.0" color="ff000000"/>
</celldesigner:modification>
</celldesigner:listOfModification>
</celldesigner:extension>
</annotation>
<listOfReactants>
<speciesReference metaid="CDMT00002" species="s1">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a1</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00003" species="s6">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a6</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfReactants>
<listOfProducts>
<speciesReference metaid="CDMT00004" species="s2">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a2</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00005" species="s7">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a7</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfProducts>
<listOfModifiers>
<modifierSpeciesReference metaid="CDMT00006" species="s15">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a15</celldesigner:alias>
</celldesigner:extension>
</annotation>
</modifierSpeciesReference>
</listOfModifiers>
</reaction>
<reaction metaid="r2" id="r2" reversible="false">
<annotation>
<celldesigner:extension>
<celldesigner:reactionType>STATE_TRANSITION</celldesigner:reactionType>
<celldesigner:baseReactants>
<celldesigner:baseReactant species="s2" alias="a2"/>
</celldesigner:baseReactants>
<celldesigner:baseProducts>
<celldesigner:baseProduct species="s3" alias="a3"/>
</celldesigner:baseProducts>
<celldesigner:listOfReactantLinks>
<celldesigner:reactantLink reactant="s8" alias="a8" targetLineIndex="-1,0">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:reactantLink>
</celldesigner:listOfReactantLinks>
<celldesigner:listOfProductLinks>
<celldesigner:productLink product="s9" alias="a9" targetLineIndex="-1,1">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:productLink>
</celldesigner:listOfProductLinks>
<celldesigner:connectScheme connectPolicy="direct" rectangleIndex="1">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
<celldesigner:lineDirection index="1" value="unknown"/>
<celldesigner:lineDirection index="2" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:editPoints>0.33333333333333326,0.0 0.666666666666667,0.0</celldesigner:editPoints>
<celldesigner:line width="1.0" color="ff000000"/>
<celldesigner:listOfModification>
<celldesigner:modification type="CATALYSIS" modifiers="s16" aliases="a16" targetLineIndex="-1,2">
<celldesigner:connectScheme connectPolicy="direct">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:line width="1.0" color="ff000000"/>
</celldesigner:modification>
</celldesigner:listOfModification>
</celldesigner:extension>
</annotation>
<listOfReactants>
<speciesReference metaid="CDMT00007" species="s2">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a2</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00008" species="s8">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a8</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfReactants>
<listOfProducts>
<speciesReference metaid="CDMT00009" species="s3">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a3</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00010" species="s9">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a9</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfProducts>
<listOfModifiers>
<modifierSpeciesReference metaid="CDMT00011" species="s16">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a16</celldesigner:alias>
</celldesigner:extension>
</annotation>
</modifierSpeciesReference>
</listOfModifiers>
</reaction>
<reaction metaid="r3" id="r3" reversible="false">
<annotation>
<celldesigner:extension>
<celldesigner:reactionType>STATE_TRANSITION</celldesigner:reactionType>
<celldesigner:baseReactants>
<celldesigner:baseReactant species="s3" alias="a3"/>
</celldesigner:baseReactants>
<celldesigner:baseProducts>
<celldesigner:baseProduct species="s4" alias="a4"/>
</celldesigner:baseProducts>
<celldesigner:listOfReactantLinks>
<celldesigner:reactantLink reactant="s10" alias="a10" targetLineIndex="-1,0">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:reactantLink>
</celldesigner:listOfReactantLinks>
<celldesigner:listOfProductLinks>
<celldesigner:productLink product="s11" alias="a11" targetLineIndex="-1,1">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:productLink>
<celldesigner:productLink product="s12" alias="a12" targetLineIndex="-1,1">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:productLink>
</celldesigner:listOfProductLinks>
<celldesigner:connectScheme connectPolicy="direct" rectangleIndex="1">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
<celldesigner:lineDirection index="1" value="unknown"/>
<celldesigner:lineDirection index="2" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:editPoints>0.3333333333333335,-4.440892098500626E-16 0.666666666666667,-4.440892098500626E-16</celldesigner:editPoints>
<celldesigner:line width="1.0" color="ff000000"/>
<celldesigner:listOfModification>
<celldesigner:modification type="CATALYSIS" modifiers="s17" aliases="a17" targetLineIndex="-1,2">
<celldesigner:connectScheme connectPolicy="direct">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:line width="1.0" color="ff000000"/>
</celldesigner:modification>
</celldesigner:listOfModification>
</celldesigner:extension>
</annotation>
<listOfReactants>
<speciesReference metaid="CDMT00012" species="s3">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a3</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00013" species="s10">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a10</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfReactants>
<listOfProducts>
<speciesReference metaid="CDMT00014" species="s4">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a4</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00015" species="s11">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a11</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00016" species="s12">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a12</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfProducts>
<listOfModifiers>
<modifierSpeciesReference metaid="CDMT00017" species="s17">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a17</celldesigner:alias>
</celldesigner:extension>
</annotation>
</modifierSpeciesReference>
</listOfModifiers>
</reaction>
<reaction metaid="r4" id="r4" reversible="false">
<annotation>
<celldesigner:extension>
<celldesigner:reactionType>STATE_TRANSITION</celldesigner:reactionType>
<celldesigner:baseReactants>
<celldesigner:baseReactant species="s4" alias="a4"/>
</celldesigner:baseReactants>
<celldesigner:baseProducts>
<celldesigner:baseProduct species="s5" alias="a5"/>
</celldesigner:baseProducts>
<celldesigner:listOfReactantLinks>
<celldesigner:reactantLink reactant="s13" alias="a13" targetLineIndex="-1,0">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:reactantLink>
</celldesigner:listOfReactantLinks>
<celldesigner:listOfProductLinks>
<celldesigner:productLink product="s14" alias="a14" targetLineIndex="-1,1">
<celldesigner:line width="1.0" color="ff000000" type="Curve"/>
</celldesigner:productLink>
</celldesigner:listOfProductLinks>
<celldesigner:connectScheme connectPolicy="direct" rectangleIndex="1">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
<celldesigner:lineDirection index="1" value="unknown"/>
<celldesigner:lineDirection index="2" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:editPoints>0.3333333333333339,-4.440892098500626E-16 0.666666666666667,0.0</celldesigner:editPoints>
<celldesigner:line width="1.0" color="ff000000"/>
<celldesigner:listOfModification>
<celldesigner:modification type="CATALYSIS" modifiers="s18" aliases="a18" targetLineIndex="-1,2">
<celldesigner:connectScheme connectPolicy="direct">
<celldesigner:listOfLineDirection>
<celldesigner:lineDirection index="0" value="unknown"/>
</celldesigner:listOfLineDirection>
</celldesigner:connectScheme>
<celldesigner:line width="1.0" color="ff000000"/>
</celldesigner:modification>
</celldesigner:listOfModification>
</celldesigner:extension>
</annotation>
<listOfReactants>
<speciesReference metaid="CDMT00018" species="s4">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a4</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00019" species="s13">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a13</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfReactants>
<listOfProducts>
<speciesReference metaid="CDMT00020" species="s5">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a5</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
<speciesReference metaid="CDMT00021" species="s14">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a14</celldesigner:alias>
</celldesigner:extension>
</annotation>
</speciesReference>
</listOfProducts>
<listOfModifiers>
<modifierSpeciesReference metaid="CDMT00022" species="s18">
<annotation>
<celldesigner:extension>
<celldesigner:alias>a18</celldesigner:alias>
</celldesigner:extension>
</annotation>
</modifierSpeciesReference>
</listOfModifiers>
</reaction>
</listOfReactions>
</model>
</sbml>

