Diverse HIV viruses are targeted by a conformationally dynamic antiviral.

Diverse HIV viruses are targeted by a conformationally dynamic antiviral.
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DOI:
10.1038/nsmb.2253
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发表时间:
2012-03-11
影响因子:
16.8
通讯作者:
James, Leo C.
James, Leo C.
中科院分区:
生物学1区
文献类型:
--
作者:
Caines, Matthew E. C.;Bichel, Katsiaryna;Price, Amanda J.;McEwan, William A.;Towers, Greg J.;Willett, Brian J.;Freund, Stefan M. V.;James, Leo C.

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Rhesus TRIMCyp (RhTC) 是一种有效的抗病毒药物,可抑制多种 HIV 病毒的复制。在这里,我们证明它通过进化在多种构象之间相互转换的活性位点而获得了针对多种病毒的能力。缓解活性位点限制的突变使 RhTC 能够动态采样构象空间,包括用于靶向 HIV-1 和 HIV-2 病毒的完全不同的构象异构体。在 RhTC 中引入可逆约束,可以在针对 HIV-1 的单一构象和针对多种病毒的动态整体之间切换。这些结果说明了如何利用构象多样性来扩大先天免疫受体的靶点多样性,并有助于解释抗病毒识别的效率。
Rhesus TRIMCyp (RhTC) is a potent antiviral that inhibits the replication of diverse HIV viruses. Here we show that it has acquired the ability to target multiple viruses by evolving an active site that interconverts between multiple conformations. Mutations that have relieved active site constrains allow RhTC to dynamically sample conformational space, including radically different conformers that are used to target both HIV-1 and HIV-2 viruses. Introduction of a reversible constraint into RhTC allows specificity to be switched between a single conformation specific for HIV-1 and a dynamic ensemble that targets multiple viruses. These results illustrate how conformational diversity can be used to expand the target diversity of innate immune receptors and help explain the efficiency of antiviral recognition.
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期刊: NATURE STRUCTURAL BIOLOGY
影响因子: --
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