The Enzyme Database

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Accepted name: GDP-Man:α-L-Rha-(1→3)-α-D-Gal-PP-Und β-1,4-mannosyltransferase
Reaction: GDP-α-D-mannose + α-L-Rha-(1→3)-α-D-Gal-PP-Und = GDP + β-D-Man-(1→4)-α-L-Rha-(1→3)-α-D-Gal-PP-Und
Glossary: α-L-Rha-(1→3)-α-D-Gal-PP-Und = α-L-rhamnopyranosyl-(1→3)-α-D-galactopyranosyl-diphospho-ditrans,octacis-undecaprenol
β-D-Man-(1→4)-α-L-Rha-(1→3)-α-D-Gal-PP-Und = β-D-mannopyranosyl-(1→4)-α-L-rhamnopyranosyl-(1→3)-α-D-galactopyranosyl-diphospho-ditrans,octacis-undecaprenol
Other name(s): wbaO (gene name); rfbO (gene name)
Systematic name: GDP-α-D-mannose:α-L-rhamnopyranosyl-(1→3)-α-D-galactopyranosyl-diphospho-ditrans,octacis-undecaprenol 4II-β-mannosyltransferase (configuration inverting)
Comments: The enzyme participates in the biosynthesis of the O antigens produced by group E and D2 strains of the pathogenic bacterium Salmonella enterica.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Xiang, S.H., Hobbs, M. and Reeves, P.R. Molecular analysis of the rfb gene cluster of a group D2 Salmonella enterica strain: evidence for its origin from an insertion sequence-mediated recombination event between group E and D1 strains. J. Bacteriol. 176 (1994) 4357–4365. [DOI] [PMID: 8021222]
2.  Zhao, Y., Biggins, J. B. and Thorson, J. S. Acceptor specificity of Salmonella GDP-Man:α-L-Rha-(1→3)-α-D- Gal- PP-Und β(1→4)-mannosyltransferase: A simplified assay based on unnatural acceptors. J. Am. Chem. Soc. 120 (1998) 12986–12987. [DOI]
3.  Zhao, Y. and Thorson, J.S. Chemoenzymatic synthesis of the Salmonella group E1 core trisaccharide using a recombinant β-(1-→4)-mannosyltransferase. Carbohydr. Res. 319 (1999) 184–191. [DOI] [PMID: 10520265]
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