si_0163 CMP-N-acetylneuraminate_Biosynthesis UDP-N-acetylglucosamine 2-epimerase (EC 5.1.3.14) si_0163 CMP-N-acetylneuraminate_Biosynthesis N-acetylneuraminate synthase (EC 2.5.1.56) si_0163 CMP-N-acetylneuraminate_Biosynthesis N-Acetylneuraminate cytidylyltransferase (EC 2.7.7.43) si_0163 CMP-N-acetylneuraminate_Biosynthesis Sialic acid biosynthesis protein NeuD, O-acetyltransferase