1.14.19.38: acyl-lipid DELTA6-acetylenase
This is an abbreviated version!
For detailed information about acyl-lipid DELTA6-acetylenase, go to the full flat file.
Reaction
+ 2 ferrocytochrome b5 + + 2 H+ = + 2 ferricytochrome b5 + 2 H2O
Synonyms
DELTA6-fatty acyl desaturase, DES6
ECTree
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Systematic Name
Systematic Name on EC 1.14.19.38 - acyl-lipid DELTA6-acetylenase
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DELTA6 acyl-lipid,ferrocytochrome-b5:oxygen oxidoreductase (6,7-dehydrogenating)
The enzyme, characterized from the moss Ceratodon purpureus, converts the double bond at position 6 of gamma-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.