Reaction catalyzed by acyl-lipid (9-3)-desaturase (1.14.19.47)
+
2
+
+
2
=
+
+
2
H2O
a linoleoyl-[glycerolipid]
+
2 ferrocytochrome b5
+
O2
+
2 H+
=
a gamma-linolenoyl-[glycerolipid]
+
ferricytochrome b5
+
2 H2O
