Reaction catalyzed by [hydroxymethylglutaryl-CoA reductase (NADPH)] kinase (2.7.11.31)

		+			=			+
	CTP	+		[hydroxymethylglutaryl-CoA reductase (NADPH)]	=		CDP	+		[hydroxymethylglutaryl-CoA reductase (NADPH)] phosphate