MetaCyc Pathway: superpathway of L-homoserine and L-methionine biosynthesis in Variovorax sp. OAS795

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Reactions and Genes L-Threonine (C)
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Aspartate kinase:
L-aspartate + ATP→L-aspartyl-4-phosphate + ADP (EC 2.7.2.4)
ABID97_RS17825 N.D.
Aspartate-semialdehyde dehydrogenase (in reverse):
L-aspartyl-4-phosphate + NADPH + H+→L-aspartate 4-semialdehyde + NADP+ + phosphate (EC 1.2.1.11)
ABID97_RS08450 N.D.
Homoserine dehydrogenase (in reverse):
L-aspartate 4-semialdehyde + NAD(P)H + H+→L-homoserine + NAD(P)+ (EC 1.1.1.3)
ABID97_RS10890 N.D.
ABID97_RS12480 -4.7
Homoserine O-succinyltransferase:
L-homoserine + succinyl-CoA→O-succinyl-L-homoserine + coenzyme A (EC 2.3.1.46)
No genes
Cystathionine gamma-synthase:
O-succinyl-L-homoserine + L-cysteine→L-cystathionine + H+ + succinate (EC 2.5.1.48)
ABID97_RS10100 -0.0
ABID97_RS15510 +0.4
ABID97_RS21630 N.D.
Cysteine-S-conjugate beta-lyase:
L-cystathionine + H2O→L-homocysteine + ammonium + pyruvate (EC 4.4.1.13)
ABID97_RS13370 -0.3
5-methyltetrahydropteroyltriglutamate--homocysteine S-methyltransferase:
L-homocysteine + 5-methyltetrahydropteroyl tri-L-glutamate→L-methionine + tetrahydropteroyl tri-L-glutamate (EC 2.1.1.14)
ABID97_RS10445 +0.0
ABID97_RS19395 +0.1
Methionine synthase:
L-homocysteine + a 5-methyltetrahydrofolate→L-methionine + a tetrahydrofolate (EC 2.1.1.13)
ABID97_RS03450 -2.7
ABID97_RS03470 -3.2

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Candidate genes for each reaction are identified from best hits to MetaCyc; by matching EC numbers (which are assigned by TIGRFam, SEED, or best hits to KEGG); or by matching SEED roles to KEGG reactions to MetaCyc reactions. See the "Protein" tab of each gene for more information