ID 2.7.7.92 DE 3-deoxy-D-glycero-D-galacto-nononate cytidylyltransferase. CA 3-deoxy-D-glycero-beta-D-galacto-non-2-ulopyranosonate + CTP = CMP-beta- CA 3-deoxy-D-glycero-beta-D-galacto-non-2-ulopyranosonate + diphosphate. CC -!- The enzyme is part of the biosynthesis pathway of the sialic acid CC 3-deoxy-D-glycero-beta-D-galacto-non-2-ulopyranosonate (Kdn). CC -!- Kdn is abundant in extracellular glycoconjugates of lower vertebrates CC such as fish and amphibians, but is also found in the capsular CC polysaccharides of bacteria that belong to the Bacteroides genus. //