2.7.7.43 N-acylneuraminate cytidylyltransferase; CMP-sialate pyrophosphorylase; CMP-sialate synthase; cytidine 5'-monophosphosialic acid synthetase; CMP-Neu5Ac synthetase; CMP-NeuAc synthetase; acylneuraminate cytidyltransferase; CMP-N-acetylneuraminate synt • • •