acyl-lipid (8-3)-desaturase activity
Catalysis of the reaction: an (8Z,11Z,14Z)-icosatrienoyl-containing glycerolipid + 2 Fe(II)-[cytochrome b5] + 2 H+ + O2 = (5Z,8Z,11Z,14Z)-eicosatetraenoyl-containing glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O. Also converts an (8Z,11Z,14Z,17Z)-eicosatetraenoyl-containing glycerolipid into a (5Z,8Z,11Z,14Z,17Z)-eicosapentaenoyl-containing glycerolipid.
GO:0016717
oxidoreductase activity, acting on paired donors, with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of water
is_a
Delta(5)-fatty-acid desaturase activity
exact
acyl-lipid 5-desaturase activity
related
di-homo-gamma-linolenate delta5 desaturase activity
related