4k1i

Induced opening of influenza virus neuraminidase N2 150-loop suggests an important role in inhibitor binding

spinqualitylabelsall models 4k1i, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4k1i is a 2 chain structure with sequence from Influenza A virus (A/RI/5+/1957(H2N2)). Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.8Å Ligands: BMA, CA, G39, MAN, NAG Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q194T1_9INFA Publication Abstract from PubMed The recently discovered 150-cavity (formed by loop residues 147-152, N2 numbering) adjacent to the enzymatic active site of group 1 influenza A neuraminidase (NA) has introduced a novel target for the design of next-generation NA inhibitors. However, only group 1 NAs, with the exception of the 2009 pandemic H1N1 NA, possess a 150-cavity, and no 150-cavity has been observed in group 2 NAs. The role of the 150-cavity played in enzymatic activity and inhibitor binding is not well understood. Here, we demonstrate for the first time that oseltamivir carboxylate can induce opening of the rigid closed N2 150-loop and provide a novel mechanism for 150-loop movement using molecular dynamics simulations. Our results provide the structural and biophysical basis of the open form of 150-loop and illustrates that the inherent flexibility and the ligand induced flexibility of the 150-loop should be taken into consideration for future drug design. Induced opening of influenza virus neuraminidase N2 150-loop suggests an important role in inhibitor binding.,Wu Y, Qin G, Gao F, Liu Y, Vavricka CJ, Qi J, Jiang H, Yu K, Gao GF Sci Rep. 2013;3:1551. doi: 10.1038/srep01551. PMID:23531861 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Neuraminidase 3D structures

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