Reaction catalyzed by protein geranylgeranyltransferase type I (2.5.1.59)

		+		Ras-CVLL	=		S-geranylgeranyl-Ras-CVLL	+
	geranylgeranyl diphosphate	+		Ras-CVLL	=		S-geranylgeranyl-Ras-CVLL	+		diphosphate