acyl-lipid omega-6 desaturase (cytochrome b5) activity
acyl-lipid omega-6 desaturase (cytochrome b5) activity
Catalysis of the reaction: a (9Z)-octadecenoyl-containing glycerolipid + 2 Fe(II)-[cytochrome b5] + 2 H+ + O2 = a (9Z,12Z)-octadecadienoyl-containing glycerolipid + 2 Fe(III)-[cytochrome b5] + 2 H2O.