MetaCyc Pathway: L-cysteine biosynthesis III (from L-homocysteine) in Pontibacter actiniarum KMM 6156, DSM 19842

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Cystathionine beta-synthase:
L-homocysteine + L-serine→L-cystathionine + H2O (EC 4.2.1.22)
CA264_13755
Cystathionine gamma-lyase:
L-cystathionine + H2O→L-cysteine + 2-oxobutanoate + ammonium (EC 4.4.1.1)
CA264_00630
CA264_17730
CA264_20315

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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