2obs | pdb_00002obs

Crystal Structures of P Domain of Norovirus VA387 in Complex with Blood Group Trisaccharides type A

spinqualitylabelsall models 2obs, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2obs is a 1 chain structure with sequence from Norovirus. The December 2012 RCSB PDB Molecule of the Month feature on ABO Blood Type Glycosyltransferases by David Goodsell is 10.2210/rcsb_pdb/mom_2012_12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: A2G, FUC, GL0 Related: 2obr, 2obt 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 Noroviruses are one of the major causes of nonbacterial gastroenteritis epidemics in humans. Recent studies on norovirus receptors show that different noroviruses recognize different human histo-blood group antigens (HBGAs), and eight receptor binding patterns of noroviruses have been identified. The P domain of the norovirus capsids is directly involved in this recognition. To determine the precise locations and receptor binding modes of HBGA carbohydrates on the viral capsids, a recombinant P protein of a GII-4 strain norovirus, VA387, was cocrystallized with synthetic type A or B trisaccharides. Based on complex crystal structures observed at a 2.0-A resolution, we demonstrated that the receptor binding site lies at the outermost end of the P domain and forms an extensive hydrogen-bonding network with the saccharide ligand. The A and B trisaccharides display similar binding modes, and the common fucose ring plays a key role in this interaction. The extensive interface between the two protomers in a P dimer also plays a crucial role in the formation of the receptor binding interface. Structural basis for the recognition of blood group trisaccharides by norovirus.,Cao S, Lou Z, Tan M, Chen Y, Liu Y, Zhang Z, Zhang XC, Jiang X, Li X, Rao Z J Virol. 2007 Jun;81(11):5949-57. Epub 2007 Mar 28. PMID:17392366 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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