1ga8

CRYSTAL STRUCTURE OF GALACOSYLTRANSFERASE LGTC IN COMPLEX WITH DONOR AND ACCEPTOR SUGAR ANALOGS.

spinqualitylabelsall models 1ga8, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ga8 is a 1 chain structure with sequence from "diplokokkus_intracellularis_meningitidis"_(sic)_weichselbaum_1887 "diplokokkus intracellularis meningitidis" (sic) weichselbaum 1887. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: BGC, MN, UPF NonStd Res: MSE, Z9D Related: 1g9r Gene: LGTC ("Diplokokkus intracellularis meningitidis" (sic) Weichselbaum 1887) Activity: Lipopolysaccharide 3-alpha-galactosyltransferase, with EC number 2.4.1.44 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Many bacterial pathogens express lipooligosaccharides that mimic human cell surface glycoconjugates, enabling them to attach to host receptors and to evade the immune response. In Neisseria meningitidis, the galactosyltransferase LgtC catalyzes a key step in the biosynthesis of lipooligosaccharide structure by transferring alpha-d-galactose from UDP-galactose to a terminal lactose. The product retains the configuration of the donor sugar glycosidic bond; LgtC is thus a retaining glycosyltranferase. We report the 2 A crystal structures of the complex of LgtC with manganese and UDP 2-deoxy-2-fluoro-galactose (a donor sugar analog) in the presence and absence of the acceptor sugar analog 4'-deoxylactose. The structures, together with results from site-directed mutagenesis and kinetic analysis, give valuable insights into the unique catalytic mechanism and, as the first structure of a glycosyltransferase in complex with both the donor and acceptor sugars, provide a starting point for inhibitor design. Crystal structure of the retaining galactosyltransferase LgtC from Neisseria meningitidis in complex with donor and acceptor sugar analogs.,Persson K, Ly HD, Dieckelmann M, Wakarchuk WW, Withers SG, Strynadka NC Nat Struct Biol. 2001 Feb;8(2):166-75. PMID:11175908 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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