MetaCyc Pathway: TCA cycle VI (Helicobacter) in Escherichia coli ECRC98

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2-oxoglutarate synthase:
2-oxoglutarate + coenzyme A + 2 an oxidized ferredoxin [iron-sulfur] cluster→succinyl-CoA + CO2 + H+ + 2 a reduced ferredoxin [iron-sulfur] cluster (EC 1.2.7.3)
No genes
3-oxoacid CoA-transferase:
succinyl-CoA + acetoacetate→succinate + acetoacetyl-CoA (EC 2.8.3.5)
No genes
Succinate dehydrogenase (ubiquinone) (in reverse):
succinate[in] + a menaquinone→fumarate[in] + a menaquinol (EC 1.3.5.1)
JDDGAC_15980 (frdA)
JDDGAC_15985 (frdB)
JDDGAC_15990
JDDGAC_15995 (frdD)
Fumarate hydratase (in reverse):
fumarate + H2O→(S)-malate (EC 4.2.1.2)
JDDGAC_01870 (fumD)
JDDGAC_02235 (fumB)
JDDGAC_02240 (fumC)
JDDGAC_10550 (ttdA)
JDDGAC_16160 (fumB)
JDDGAC_22980 (fumE)
(S)-malate + a menaquinone→oxaloacetate + a menaquinol (EC 1.1.5.4)
JDDGAC_27185 (mqo)
Citrate (Si)-synthase:
oxaloacetate + acetyl-CoA + H2O→citrate + coenzyme A + H+ (EC 2.3.3.1; 2.3.3.16; 2.3.3.3)
JDDGAC_10615 (gltA)
Aconitate hydratase:
citrate→cis-aconitate + H2O (EC 4.2.1.3)
JDDGAC_05120 (acnA)
JDDGAC_10310 (ybhJ)
JDDGAC_14075 (acnB)
Aconitate hydratase:
cis-aconitate + H2O→D-threo-isocitrate (EC 4.2.1.3)
JDDGAC_05120 (acnA)
JDDGAC_10310 (ybhJ)
JDDGAC_14075 (acnB)
Isocitrate dehydrogenase (NADP(+)):
D-threo-isocitrate + NADP+→2-oxoglutarate + CO2 + NADPH (EC 1.1.1.42)
JDDGAC_06605 (icd)

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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