IUBMB Enzyme Nomenclature


Accepted name: dTDP-Rha:α-D-Gal-diphosphoundecaprenol α-1,3-rhamnosyltransferase

Reaction: dTDP-β-L-rhamnose + α-D-galactosyl-diphospho-ditrans,octacis-undecaprenol = dTDP + 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

Other name(s): wbaN (gene name); rfbN (gene name)

Systematic name: dTDP-β-L-rhamnose:α-D-galactosyl-diphospho-ditrans,octacis-undecaprenol 3-α-rhamnosyltransferase (configuration-inverting)

Comments: The enzyme, characterized from several Salmonella strains, participates in the biosynthesis of the repeat unit of O antigens produced by strains that belong to the A, B, D and E groups.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Liu, D., Haase, A.M., Lindqvist, L., Lindberg, A.A. and Reeves, P.R. Glycosyl transferases of O-antigen biosynthesis in Salmonella enterica: identification and characterization of transferase genes of groups B, C2, and E1. J. Bacteriol. 175 (1993) 3408-3413. [PMID: 7684736]

[EC created 2021]

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