2.5.1.56	N-acetylneuraminate synthase	CMP-N-acetylneuraminate biosynthesis II (bacteria)	
2.7.7.43	N-acylneuraminate cytidylyltransferase	CMP-N-acetylneuraminate biosynthesis II (bacteria)	
3.2.1.183	UDP-N-acetylglucosamine 2-epimerase (hydrolysing)	CMP-N-acetylneuraminate biosynthesis II (bacteria)