Reaction catalyzed by N-acylneuraminate cytidylyltransferase (2.7.7.43)

		+			=			+
	CTP	+		2-keto-3-deoxy-D-glycero-D-galacto-nononic acid	=		diphosphate	+		CMP-2-keto-3-deoxy-D-glycero-D-galacto-nononic acid