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Molecular Characterization of Mexican HIV-1 Vif Sequences

机译:墨西哥HIV-1 Vif序列的分子表征

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摘要

The viral infectivity factor (Vif) is an HIV accessory protein that counteracts host antiviral proteins of the APOBEC3 family. Accumulating evidence highlights the pivotal role that accessory HIV proteins have on disease pathogenesis, a fact that has made them targets of interest for novel therapeutic and preventive strategies. Little is known about Vif sequence diversity outside of African or white populations. Mexico is home to Americas' third largest HIV-affected population and Mexican Hispanics represent an ever-increasing U.S. minority. This study provides a detailed analysis of the diversity seen in 77 Mexican Vif protein sequences. Phylogenetic analysis shows that most sequences cluster with HIV-1 subtype B, while less than 10% exhibit greater similarity to subtype D and A subtypes. Although most functional motifs are conserved among the Mexican sequences, substantial diversity was seen in some APOBEC binding sites, the nuclear localization inhibitory signal, and the CBF interaction sites.
机译:病毒感染因子(Vif)是一种HIV辅助蛋白,可抵消APOBEC3家族的宿主抗病毒蛋白。越来越多的证据凸显了辅助HIV蛋白在疾病发病机理中的关键作用,这一事实使它们成为新型治疗和预防策略的目标。对于非洲或白人以外的Vif序列多样性知之甚少。墨西哥是美洲受艾滋病毒影响第三大人口的家园,墨西哥裔西班牙裔是美国不断增加的少数族裔。这项研究详细分析了77种墨西哥Vif蛋白序列中发现的多样性。系统发育分析表明,大多数序列与HIV-1 B亚型成簇,而少于10%的序列与D和A亚型具有更大的相似性。尽管大多数功能性基序在墨西哥序列中是保守的,但在某些APOBEC结合位点,核定位抑制信号和CBF相互作用位点中发现了相当大的多样性。

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