label: delta6-acyl-lipid desaturase activity
label_lc: delta6-acyl-lipid desaturase activity
description: "Catalysis of the reaction: a gamma-linolenoyl-[glycerolipid] + 2 ferrocytochrome b5 + O2 + 2 H+ = a (9Z,12Z)-octadeca-9,12-dien-6-ynoyl-[glycerolipid] + 2 ferricytochrome b5 + 2 H2O."