MetaCyc Pathway: spermidine biosynthesis I in Synechococcus elongatus PCC 7942

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Adenosylmethionine decarboxylase:
S-adenosyl-L-methionine + H+→S-adenosyl 3-(methylsulfanyl)propylamine + CO2 (EC 4.1.1.50)
Synpcc7942_2043 (speH)
Synpcc7942_2249
Spermidine synthase:
S-adenosyl 3-(methylsulfanyl)propylamine + putrescine→spermidine + S-methyl-5'-thioadenosine + H+ (EC 2.5.1.16)
Synpcc7942_0628

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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