ID   1.14.19.47
DE   acyl-lipid (9-3)-desaturase.
AN   acyl-lipid 6-desaturase.
AN   acyl-lipid Delta(6)-desaturase.
AN   Delta(6)-desaturase.
CA   (1) (9Z,12Z,15Z)-octadecatrienoyl-containing glycerolipid + 2 Fe(II)-
CA   [cytochrome b5] + 2 H(+) + O2 = (6Z,9Z,12Z,15Z)-octadecatetraenoyl-
CA   containing glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O.
CA   (2) a (9Z,12Z)-octadecadienoyl-containing glycerolipid + 2 Fe(II)-
CA   [cytochrome b5] + 2 H(+) + O2 = (6Z,9Z,12Z)-octadecatrienoyl-containing
CA   glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O.
CC   -!- The enzyme, characterized from the moss Physcomitrella patens and the
CC       plant Borago officinalis (borage), introduces a cis double bond at
CC       carbon 6 of several acyl-lipids that contain an existing Delta(9) cis
CC       double bond.
CC   -!- The enzyme contains a cytochrome b5 domain that acts as the electron
CC       donor for the active site of the desaturase.
DR   Q9LEN0, ACET6_CERPU;  O04353, DES6_BOROF ;  Q9LEM9, DES6_CERPU ;
DR   Q9ZNW2, DES6_PHYPA ;
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