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EC 1.14.19.34 Details
show Brenda entryEC number
1.14.19.34
Accepted name
acyl-lipid (9+3)-(E)-desaturase
Reaction
(1) an oleoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12E)-octadeca-9,12-dienoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O;;(2) a palmitoleoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12E)-hexadeca-9,12-dienoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O
Other name(s)
acyl-lipid 12-(E)-desaturase,
DsFAD2-1,
FADX
Systematic name
Δ9 acyl-lipid,ferrocytochrome b5:oxygen oxidoreductase (12,13 trans-dehydrogenating)
Comment
The enzymes from the plants Dimorphotheca sinuata (African daisy) and Vernicia fordii (tung oil tree) insert a trans double bond in position C-12 of oleate and palmitoleate incorporated into glycerolipids. The enzyme introduces the new double bond at a position three carbons away from an existing double bond at position 9, towards the methyl end of the fatty acid. The enzyme from tung oil tree also possesses the activity of EC 1.14.19.33, Δ12 acyl-lipid conjugase.
History
created 2015
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1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.4.99.1 D-amino-acid dehydrogenase
