Biochemical characterization of UDP-GlcNAc/Glc 4-epimerase from Escherichia coli O86:B7.


The O-antigen of lipopolysaccharide in Gram-negative bacteria plays an important role in bacterium-host interactions. Escherichia coli O86:B7 O-unit contains five sugar residues: one fucose (Fuc) and two each of N-acetylgalactosamine (GalNAc) and galactose (Gal). The entire O-antigen gene cluster was previously sequenced: orf1 was assigned the gne gene for… (More)


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