Glycosyl transferase family 1.

conserved hypothetical protein. This model represents nearly the full length of MJ1255 from Methanococcus jannaschii and of an unpublished protein from Vibrio cholerae, as well as the C-terminal half of a protein from Methanobacterium thermoautotrophicum. A small region (~50 amino acids) within the domain appears related to a family of sugar transferases. [Hypothetical proteins, Conserved]

undecaprenyldiphospho-muramoylpentapeptide beta-N-acetylglucosaminyltransferase. MurG (EC 2.4.1.227) is an N-acetylglucosaminyltransferase, the last enzyme involved in the intracellular phase of peptidoglycan biosynthesis. It transfers N-acetyl-D-glucosamine (GlcNAc) from UDP-GlcNAc to the C4 hydroxyl of a lipid-linked N-acetylmuramoyl pentapeptide (NAM). The resulting disaccharide is then transported across the cell membrane, where it is polymerized into NAG-NAM cell-wall repeat structure. MurG belongs to the GT-B structural superfamily of glycoslytransferases, which have characteristic N- and C-terminal domains, each containing a typical Rossmann fold. The two domains have high structural homology despite minimal sequence homology. The large cleft that separates the two domains includes the catalytic center and permits a high degree of flexibility.

UDP:flavonoid glycosyltransferase YjiC, YdhE family [Carbohydrate transport and metabolism].

UDP-glycosyltransferases and similar proteins. This family includes the Gtfs, a group of homologous glycosyltransferases involved in the final stages of the biosynthesis of antibiotics vancomycin and related chloroeremomycin. Gtfs transfer sugar moieties from an activated NDP-sugar donor to the oxidatively cross-linked heptapeptide core of vancomycin group antibiotics. The core structure is important for the bioactivity of the antibiotics.