The Enzyme Database

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Accepted name: N,N′-diacetyllegionaminate synthase
Reaction: 2,4-diacetamido-2,4,6-trideoxy-α-D-mannopyranose + phosphoenolpyruvate + H2O = N,N′-diacetyllegionaminate + phosphate
For diagram of legionaminic acid biosynthesis, click here
Glossary: legionaminate = 5,7-diamino-3,5,7,9-tetradeoxy-D-glycero-D-galacto-non-2-ulosonate
Other name(s): neuB (gene name); legI (gene name)
Systematic name: phosphoenolpyruvate:2,4-diacetamido-2,4,6-trideoxy-α-D-mannopyranose 1-(2-carboxy-2-oxoethyl)transferase
Comments: Requires a divalent metal such as Mn2+. Isolated from the bacteria Legionella pneumophila and Campylobacter jejuni, where it is involved in the biosynthesis of legionaminic acid, a virulence-associated, cell surface sialic acid-like derivative.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Glaze, P.A., Watson, D.C., Young, N.M. and Tanner, M.E. Biosynthesis of CMP-N,N′-diacetyllegionaminic acid from UDP-N,N′-diacetylbacillosamine in Legionella pneumophila. Biochemistry 47 (2008) 3272–3282. [DOI] [PMID: 18275154]
2.  Schoenhofen, I.C., Vinogradov, E., Whitfield, D.M., Brisson, J.R. and Logan, S.M. The CMP-legionaminic acid pathway in Campylobacter: biosynthesis involving novel GDP-linked precursors. Glycobiology 19 (2009) 715–725. [DOI] [PMID: 19282391]
[EC created 2012]

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