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Your query returned 2 entries. Printable version
EC | 1.14.19.36 | ||||
Accepted name: | sn-1 acyl-lipid ω-3 desaturase (ferredoxin) | ||||
Reaction: | (1) a 1-γ-linolenoyl-2-acyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ = a 1-stearidonoyl-2-acyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O (2) a 1-linoleoyl-2-acyl-[glycerolipid] + 2 reduced ferredoxin [iron-sulfur] cluster + O2 + 2 H+ = a 1-α-linolenoyl-2-acyl-[glycerolipid] + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O |
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Glossary: | stearidonic acid = (6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic acid | ||||
Other name(s): | desB (gene name) | ||||
Systematic name: | 1-γ-linolenoyl-2-acyl-[glycerolipid],ferredoxin:oxygen oxidoreductase (15,16 cis-dehydrogenating) | ||||
Comments: | The enzyme, characterized from cyanobacteria, introduces a cis double bond at carbon 15 of linoleoyl and γ-linolenoyl groups attached to the sn-1 position of glycerolipids. The enzyme is an ω desaturase, and determines the location of the double bond by counting three carbons from the methyl end of the fatty acid. It is nonspecific with respect to the polar head group of the glycerolipid. cf. EC 1.14.19.35, sn-2 acyl-lipid ω-3 desaturase (ferredoxin). | ||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||
References: |
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EC | 1.14.19.47 | ||||
Accepted name: | acyl-lipid (9-3)-desaturase | ||||
Reaction: | (1) an α-linolenoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a stearidonoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O (2) a linoleoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a γ-linolenoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O |
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Glossary: | stearidonic acid = (6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoic acid | ||||
Other name(s): | DES6 (gene name); acyl-lipid 6-desaturase; acyl-lipid Δ6-desaturase; Δ6-desaturase (ambiguous) | ||||
Systematic name: | Δ9 acyl-[glycerolipid],ferrocytochrome b5:oxygen oxidoreductase (6,7-cis-dehydrogenating) | ||||
Comments: | The enzyme, characterized from the moss Physcomitrella patens and the plant Borago officinalis (borage), introduces a cis double bond at carbon 6 of several acyl-lipids that contain an existing Δ9 cis double bond. The enzyme contains a cytochrome b5 domain that acts as the electron donor for the active site of the desaturase. | ||||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||
References: |
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