MetaCyc Pathway: superpathway of L-cysteine biosynthesis (mammalian) in Rhodosporidium toruloides IFO0880

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Methionine adenosyltransferase:
L-methionine + ATP + H2O→S-adenosyl-L-methionine + diphosphate + phosphate (EC 2.5.1.6)
mRNA_5403 (13771)
S-adenosyl-L-methionine + a demethylated methyl donor→S-adenosyl-L-homocysteine + a methylated methyl donor + H+
No genes
Adenosylhomocysteinase:
S-adenosyl-L-homocysteine + H2O→L-homocysteine + adenosine (EC 3.3.1.1)
mRNA_4544 (12912)
Cystathionine beta-synthase:
L-homocysteine + L-serine→L-cystathionine + H2O (EC 4.2.1.22)
mRNA_7344 (15712)
Cystathionine gamma-lyase:
L-cystathionine + H2O→L-cysteine + 2-oxobutanoate + ammonium (EC 4.4.1.1)
mRNA_1131 (9499)

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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