2aep | pdb_00002aep

An epidemiologically significant epitope of a 1998 influenza virus neuraminidase forms a highly hydrated interface in the NA-antibody complex.

spinqualitylabelsall models 2aep, resolution 2.10Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2aep is a 3 chain structure with sequence from Influenza A virus (A/Memphis/31/98(H3N2)) and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.1Å Ligands: BMA, CA, GLC, MAN, NAG, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q9DL16_9INFA Catalyzes the removal of terminal sialic acid residues from viral and cellular glycoconjugates.[RuleBase:RU361252] 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 The crystal structure of the complex between neuraminidase (NA) of influenza virus A/Memphis/31/98 (H3N2) and Fab of monoclonal antibody Mem5 has been determined at 2.1A resolution and shows a novel pattern of interactions compared to other NA-Fab structures. The interface buries a large area of 2400 A2 and the surfaces have high complementarity. However, the interface is also highly hydrated. There are 33 water molecules in the interface>or=95% buried from bulk solvent, but only 13 of these are isolated from other water molecules. The rest are involved in an intricate network of water-mediated hydrogen bonds throughout the interface, stabilizing the complex. Glu199 on NA, the most critical side-chain to the interaction as previously determined by escape mutant analysis and site-directed mutation, is located in a non-aqueous island. Glu199 and three other residues that contribute the major part of the antigen buried surface of the complex have mutated in human influenza viruses isolated after 1998, confirming that Mem5 identifies an epidemiologically important antigenic site. We conclude that antibody selection of NA variants is a significant component of recent antigenic drift in human H3N2 influenza viruses, supporting the idea that influenza vaccines should contain NA in addition to hemagglutinin. An epidemiologically significant epitope of a 1998 human influenza virus neuraminidase forms a highly hydrated interface in the NA-antibody complex.,Venkatramani L, Bochkareva E, Lee JT, Gulati U, Graeme Laver W, Bochkarev A, Air GM J Mol Biol. 2006 Feb 24;356(3):651-63. Epub 2005 Dec 7. PMID:16384583 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Monoclonal Antibodies 3D structures Neuraminidase 3D structures

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