Reaction catalyzed by acyl-lipid (8-3)-desaturase (1.14.19.30), acyl-CoA (8-3)-desaturase (1.14.19.44)
+
+
+
=
+
+
H2O
dihomo-gamma-linolenic acid
+
ferrocytochrome b5
+
O2
+
H+
=
arachidonic acid
+
ferricytochrome b5
+
H2O
