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Information on EC 1.14.19.38 - acyl-lipid DELTA6-acetylenase

for references in articles please use BRENDA:EC1.14.19.38
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EC Tree
IUBMB Comments
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.
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The expected taxonomic range for this enzyme is: Ceratodon purpureus
Synonyms
delta6-fatty acyl desaturase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
a gamma-linolenoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12Z)-octadeca-9,12-dien-6-ynoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O
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(1)
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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
show the reaction diagram
(2)
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PATHWAY SOURCE
PATHWAYS
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