ID   1.14.19.34
DE   acyl-lipid (9+3)-(E)-desaturase.
AN   acyl-lipid 12-(E)-desaturase.
CA   (1) a (9Z)-octadecenoyl-containing glycerolipid + 2 Fe(II)-[cytochrome
CA   b5] + 2 H(+) + O2 = a (9Z,12E)-octadecadienoyl-containing glycerolipid +
CA   2 Fe(III)-[cytochrome b5] + 2 H2O.
CA   (2) a (9Z)-hexadecenoyl-containing glycerolipid + 2 Fe(II)-[cytochrome
CA   b5] + 2 H(+) + O2 = a (9Z,12E)-hexadecadienoyl-containing glycerolipid +
CA   2 Fe(III)-[cytochrome b5] + 2 H2O.
CC   -!- The enzymes from the plants Dimorphotheca sinuata (African daisy) and
CC       Vernicia fordii (tung oil tree) insert a trans double bond in
CC       position C-12 of oleate and palmitoleate incorporated into
CC       glycerolipids.
CC   -!- The enzyme introduces the new double bond at a position three carbons
CC       away from an existing double bond at position 9, toward the methyl
CC       end of the fatty acid.
CC   -!- The enzyme from tung oil tree also possesses the activity of
CC       EC 1.14.19.33.
DR   Q6RS95, FAD21_DIMSI;  Q8GZC2, FADX_VERFO ;
//