MetaCyc Pathway: biotin biosynthesis I in Escherichia coli BW25113

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Reactions and Genes D-Galacturonic Acid (C) MOPS
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a malonyl-[acp] + S-adenosyl-L-methionine→a malonyl-[acp] methyl ester + S-adenosyl-L-homocysteine (EC 2.1.1.197)
b0777 (bioC) -1.6
Beta-ketoacyl-acyl-carrier-protein synthase II:
a malonyl-[acp] + a malonyl-[acp] methyl ester + H+→a 3-oxoglutaryl-[acp] methyl ester + a soluble [acyl-carrier protein] + CO2 (EC 2.3.1.179; 2.3.1.41)
b1095 (fabF) -0.2
b2323 (fabB) N.D.
3-oxoacyl-[acyl-carrier-protein] reductase (in reverse):
a 3-oxoglutaryl-[acp] methyl ester + NADPH + H+→a (3R)-3-hydroxyglutaryl-[acp] methyl ester + NADP+ (EC 1.1.1.100)
b1093 (fabG) N.D.
b2137 (yohF) -0.2
b2426 (ucpA) -0.2
3-hydroxyoctanoyl-[acyl-carrier-protein] dehydratase:
a (3R)-3-hydroxyglutaryl-[acp] methyl ester→a (2E)-enoylglutaryl-[acp] methyl ester + H2O (EC 4.2.1.59)
b0180 (fabZ) N.D.
b0954 (fabA) N.D.
Enoyl-[acyl-carrier-protein] reductase (NADH) (in reverse):
a (2E)-enoylglutaryl-[acp] methyl ester + NADH + H+→a glutaryl-[acp] methyl ester + NAD+ (EC 1.3.1.9)
b1288 (fabI) N.D.
Beta-ketoacyl-acyl-carrier-protein synthase II:
a glutaryl-[acp] methyl ester + a malonyl-[acp] + H+→a 3-oxopimeloyl-[acp] methyl ester + a soluble [acyl-carrier protein] + CO2 (EC 2.3.1.179; 2.3.1.41)
b1095 (fabF) -0.2
b2323 (fabB) N.D.
3-oxoacyl-[acyl-carrier-protein] reductase (in reverse):
a 3-oxopimeloyl-[acp] methyl ester + NADPH + H+→a (3R)-3-hydroxypimeloyl-[acp] methyl ester + NADP+ (EC 1.1.1.100)
b1093 (fabG) N.D.
b2137 (yohF) -0.2
b2426 (ucpA) -0.2
3-hydroxyoctanoyl-[acyl-carrier-protein] dehydratase:
a (3R)-3-hydroxypimeloyl-[acp] methyl ester→a (2E)-enoylpimeloyl-[acp] methyl ester + H2O (EC 4.2.1.59)
b0180 (fabZ) N.D.
b0954 (fabA) N.D.
Enoyl-[acyl-carrier-protein] reductase (NADH) (in reverse):
a (2E)-enoylpimeloyl-[acp] methyl ester + NADH + H+→a pimeloyl-[acp] methyl ester + NAD+ (EC 1.3.1.9)
b1288 (fabI) N.D.
a pimeloyl-[acp] methyl ester + H2O→a pimeloyl-[acp] + methanol + H+ (EC 3.1.1.85)
b3412 (bioH) -1.8
8-amino-7-oxononanoate synthase:
a pimeloyl-[acp] + L-alanine + H+→(8S)-8-amino-7-oxononanoate + a soluble [acyl-carrier protein] + CO2 (EC 2.3.1.47)
b0776 (bioF) -1.5
Adenosylmethionine--8-amino-7-oxononanoate transaminase:
(8S)-8-amino-7-oxononanoate + S-adenosyl-L-methionine→(7R,8S)-diaminononanoate + S-adenosyl-4-methylsulfanyl-2-oxobutanoate (EC 2.6.1.62)
b0774 (bioA) -1.8
Dethiobiotin synthase:
(7R,8S)-diaminononanoate + ATP + CO2→dethiobiotin + ADP + 3 H+ + phosphate (EC 6.3.3.3)
b0778 (bioD) -1.8
b1593 (b1593) -0.2
Biotin synthase:
dethiobiotin + H+ + 2 a reduced [2Fe-2S] ferredoxin + S-adenosyl-L-methionine + a sulfurated [sulfur carrier]→4,5-secobiotin + 5'-deoxyadenosine + L-methionine + 2 an oxidized [2Fe-2S] ferredoxin + an unsulfurated [sulfur carrier] (EC 2.8.1.6)
b0775 (bioB) -2.4
Biotin synthase:
4,5-secobiotin + S-adenosyl-L-methionine→biotin + 5'-deoxyadenosine + L-methionine + H+ (EC 2.8.1.6)
b0775 (bioB) -2.4

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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