Term Name: acyl-lipid omega-6 desaturase (cytochrome b5) activity
Synonyms: 1-16:0-2-18:1-phosphatidylcholine desaturase activity, 1-18:1-2-18:2-phosphatidylcholine desaturase activity, 1-18:1-2-18:2-phosphatidylcholine synthase activity, 1-18:1-2-18:3-phosphatidylcholinedesaturase activity, 1-18:2-2-18:1-phosphatidylcholine desaturase activity (SN2-18:2 forming), 1-acyl-2-oleoyl-sn-glycero-3-phosphocholine:NAD+ delta12-oxidoreductase activity, linoleate synthase activity, oleate desaturase activity, oleoyl-CoA desaturase activity, oleoylphosphatidylcholine desaturase activity, phosphatidylcholine desaturase activity
Definition: 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.
Ontology: GO: Molecular Function [GO:0050184]    QuickGO    AmiGO

Relationships
is a type of: 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