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Your query returned 1 entry. 
Printable version
| EC | 1.14.19.38 | ||
| Accepted name: | acyl-lipid Δ6-acetylenase | ||
| Reaction: | (1) a γ-linolenoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12Z)-octadeca-9,12-dien-6-ynoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O (2) a stearidonoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12Z,15Z)-octadeca-9,12,15-trien-6-ynoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O |
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| Glossary: | γ-linolenoate = (6Z,9Z,12Z)-octadeca-6,9,12-trienoate stearidonate = (6Z,9Z,12Z,15Z)-octadeca-6,9,12,15-tetraenoate dicranin = (9Z,12Z,15Z)-octadeca-9,12,15-trien-6-ynoic acid |
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| Systematic name: | Δ6 acyl-lipid,ferrocytochrome-b5:oxygen oxidoreductase (6,7-dehydrogenating) | ||
| Comments: | The enzyme, characterized from the moss Ceratodon purpureus, converts the double bond at position 6 of γ-linolenate and stearidonate into a triple bond. The product of the latter, dicranin, is the main fatty acid found in C. purpureus. The enzyme contains a cytochrome b5 domain that acts as the direct electron donor to the desaturase active site. The enzyme also has the activity of EC 1.14.19.47, acyl-lipid (9-3)-desaturase. | ||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||
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