Reaction catalyzed by protein farnesyltransferase (2.5.1.58)

		+		[Ras]-Cys-Val-Ile-Met	=			+		[Ras]-S-farnesyl-Cys-Val-Ile-Met
	farnesyl triphosphate	+		[Ras]-Cys-Val-Ile-Met	=		triphosphate	+		[Ras]-S-farnesyl-Cys-Val-Ile-Met