Reaction catalyzed by protein geranylgeranyltransferase type I (2.5.1.59)
+
=
+
geranylgeranyl diphosphate
+
Thr-Lys-Cys-Val-Ile-Arg
=
diphosphate
+
Thr-Lys-(S-geranylgeranyl)-Cys-Val-Ile-Arg