ID   1.14.19.33
DE   Delta(12) acyl-lipid conjugase (11E,13E-forming).
AN   fatty acid Delta(12)-conjugase.
CA   (1) a (9Z,12Z)-octadecadienoyl-containing glycerolipid + 2 Fe(II)-
CA   [cytochrome b5] + 2 H(+) + O2 = a (9Z,11E,13E)-octadecatrienoyl-
CA   containing glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O.
CA   (2) (9Z,12Z,15Z)-octadecatrienoyl-containing glycerolipid + 2 Fe(II)-
CA   [cytochrome b5] + 2 H(+) + O2 = a (9Z,11E,13E,15Z)-octadecatetraenoyl-
CA   containing glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O.
CC   -!- The enzyme, characterized from the plants Impatiens balsamina,
CC       Momordica charantia (bitter gourd) and Vernicia fordii (tung tree),
CC       converts a single cis double bond at carbon 12 to two conjugated
CC       trans bonds at positions 11 and 13.
CC   -!- The enzyme from Vernicia fordii can also act as a 12(E) desaturase
CC       when acting on the monounsaturated fatty acids oleate and
CC       palmitoleate. cf. EC 1.14.19.16.
DR   Q9SP62, FADX_IMPBA ;  Q9SP61, FADX_MOMCH ;  Q8GZC2, FADX_VERFO ;
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