1hyv

HIV INTEGRASE CORE DOMAIN COMPLEXED WITH TETRAPHENYL ARSONIUM

spinqualitylabelsall models 1hyv, resolution 1.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1hyv is a 1 chain structure with sequence from 9hiv1. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL, SO4, TTA NonStd Res: CAF Related: 1hyz Activity: RNA-directed DNA polymerase, with EC number 2.7.7.49 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 Integration of the reverse-transcribed HIV cDNA into the host DNA is a required step in viral replication. The virus-encoded integrase protein catalyzes the initial DNA breaking and joining reactions that mediate cDNA integration. Here, the identification by X-ray crystallography of a small-molecule binding site on the integrase catalytic domain is reported. The small-molecule family studied consists of a core of arsenic or phosphorus surrounded by four aromatic groups. Two arsenic derivatives were visualized bound to integrase. In each case, two molecules bound at symmetry-related sites on the catalytic domain dimer interface. The first compound studied, tetraphenyl arsonium, did not inhibit integrase. However, a synthetic compound substituting a catechol for one of the phenyl rings, dihydroxyphenyltriphenylarsonium, bound to the same site and did inhibit the enzyme. Changes in the vicinity of the catalytic site were seen with the inhibitory compound only, potentially explaining its mechanism of action. Further substituting phosphonium for arsonium yielded a compound with an IC(50) in the low micromolar range. These findings may be useful in designing new inhibitors of integrase, which is at present the only one of the three HIV enzymes for which clinically useful inhibitors are not available. Identification of a small-molecule binding site at the dimer interface of the HIV integrase catalytic domain.,Molteni V, Greenwald J, Rhodes D, Hwang Y, Kwiatkowski W, Bushman FD, Siegel JS, Choe S Acta Crystallogr D Biol Crystallogr. 2001 Apr;57(Pt 4):536-44. PMID:11264582 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Retroviral integrase 3D structures

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