首页> 外文期刊>Journal of Biomolecular Structure and Dynamics >Molecular Dynamics of HIV1-Integrase in Complex with 93del - A Structural Perspective on the Mechanism of Inhibition.
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Molecular Dynamics of HIV1-Integrase in Complex with 93del - A Structural Perspective on the Mechanism of Inhibition.

机译:HIV 1-整合酶与93 del配合物的分子动力学-抑制机理的结构性观点。

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摘要

HIV1 integrase is an important target for the antiviral therapy. Guanine-rich quadruplex, such as 93del, have been shown to be potent inhibitors of this enzyme and thus representing a new class of antiviral agents. Although X-ray and NMR structures of HIV1 integrase and 93del have been reported, there is no structural information of the complex and the mechanism of inhibition still remains unexplored. A number of computational methods including automated protein-DNA docking and molecular dynamics simulation in explicit solvent were used to model the binding of 93del to HIV1 integrase. Analysis of the dynamic behaviour of the complex using principal components analysis and elastic network modelling techniques allow us to understand how the binding of 93del aptamer and its interactions with key residues affect the intrinsic motions of the catalytic loops by stabilising them in catalytically inactive conformations. Such insights into the structural mechanism of inhibition can aid in improving the design of anti-HIV aptamers.
机译:HIV1整合酶是抗病毒治疗的重要目标。富含鸟嘌呤的四联体,例如93del,已被证明是该酶的有效抑制剂,因此代表了一类新的抗病毒剂。尽管已经报道了HIV1整合酶和93del的X射线和NMR结构,但没有该复合物的结构信息,其抑制机理仍未探索。许多计算方法包括自动蛋白质-DNA对接和在显式溶剂中的分子动力学模拟,以模拟93del与HIV1整合酶的结合。使用主成分分析和弹性网络建模技术对复合物的动力学行为进行分析,使我们能够了解93del适体的结合及其与关键残基的相互作用如何通过将其稳定在催化惰性构象中来影响催化环的固有运动。对抑制的结构机制的这种见解可以帮助改进抗HIV适体的设计。

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