MetaCyc Pathway: icosapentaenoate biosynthesis III (8-desaturase, mammals) in Rhodopseudomonas palustris CGA009

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Reactions and Genes 4-Hydroxybenzoate (C)
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Long-chain-fatty-acid--CoA ligase:
α-linolenate + ATP + coenzyme A→α-linolenoyl-CoA + AMP + diphosphate
(EC 6.2.1.3)
TX73_002405 +0.1
TX73_006335 -0.0
TX73_006375 -0.1
TX73_009080 +0.3
TX73_011050 +0.1
TX73_011070 +0.0
TX73_017055 -0.2
TX73_017935 -0.2
TX73_019250 +0.0
TX73_020940 -0.2
TX73_022105 -2.0
TX73_025065 +0.1
α-linolenoyl-CoA + malonyl-CoA + H+→(11Z,14Z,17Z)-3-oxoicosatrienoyl-CoA + CO2 + coenzyme A (EC 2.3.1.199)
No genes
(11Z,14Z,17Z)-3-oxoicosatrienoyl-CoA + NAD(P)H + H+→(3R,11Z,14Z,17Z)-3-hydroxyicosatrienoyl-CoA + NAD(P)+ (EC 1.1.1.330)
No genes
(3R,11Z,14Z,17Z)-3-hydroxyicosatrienoyl-CoA→(2E,11Z,14Z,17Z)-icosatetraenoyl-CoA + H2O (EC 4.2.1.134)
No genes
(2E,11Z,14Z,17Z)-icosatetraenoyl-CoA + NADH + H+→(11Z,14Z,17Z)-icosatrienoyl-CoA + NAD+ (EC 1.3.1.93)
No genes
(11Z,14Z,17Z)-icosatrienoyl-CoA + 2 a ferrocytochrome b5 + dioxygen + 2 H+→(8Z,11Z,14Z,17Z)-icosatetraenoyl-CoA + 2 a ferricytochrome b5 + 2 H2O
No genes
(8Z,11Z,14Z,17Z)-icosatetraenoyl-CoA + 2 a ferrocytochrome b5 + dioxygen + 2 H+→(5Z,8Z,11Z,14Z,17Z)-icosapentaenoyl-CoA + 2 a ferricytochrome b5 + 2 H2O (EC 1.14.19.44)
No genes

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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