N-acylneuraminate cytidylyltransferase (Cmas)

Catalyzes the activation of N-acetylneuraminic acid (NeuNAc) into cytidine 5'-monophosphate N-acetylneuraminic acid (CMP-NeuNAc), a substrate required for the addition of sialic acid. Has some activity toward NeuNAc, N-glycolylneuraminic acid (Neu5Gc) or 2-keto-3-deoxy-D-glycero-D-galacto-nononic acid (KDN).

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