MetaCyc Pathway: L-cysteine biosynthesis VI (reverse transsulfuration) in Mycobacterium tuberculosis H37Rv

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Methionine adenosyltransferase:
L-methionine + ATP + H2O→S-adenosyl-L-methionine + diphosphate + phosphate (EC 2.5.1.6)
Rv1392
Serine O-acetyltransferase:
L-serine + acetyl-CoA→O-acetyl-L-serine + coenzyme A (EC 2.3.1.30)
Rv2335
S-adenosyl-L-methionine + a demethylated methyl acceptor→S-adenosyl-L-homocysteine + a methylated methyl acceptor + H+
No genes
Adenosylhomocysteine nucleosidase:
S-adenosyl-L-homocysteine + H2O→S-ribosyl-L-homocysteine + adenine (EC 3.2.2.9)
Rv0091
S-ribosylhomocysteine lyase:
S-ribosyl-L-homocysteine→L-homocysteine + autoinducer 2 (EC 4.4.1.21)
No genes
O-acetyl-L-serine + L-homocysteine→L-cystathionine + acetate + H+ (EC 2.5.1.134)
No genes
Cystathionine gamma-lyase:
L-cystathionine + H2O→L-cysteine + 2-oxobutanoate + ammonium (EC 4.4.1.1)
Rv1079

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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