A naturally occurring bovine APOBEC3 confers resistance to bovine lentiviruses: implication for the co-evolution of bovids and their lentiviruses.

A naturally occurring bovine APOBEC3 confers resistance to bovine lentiviruses: implication for the co-evolution of bovids and their lentiviruses.
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DOI:
10.1038/srep33988
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发表时间:
2016-09-26
期刊:
影响因子:
4.6
通讯作者:
Sato K
Sato K
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yamada E;Yoshikawa R;Nakano Y;Misawa N;Kobayashi T;Ren F;Izumi T;Miyazawa T;Koyanagi Y;Sato K

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哺乳动物与慢病毒共同进化了很长时间。作为证据,慢病毒编码的病毒感染因子(Vif)可拮抗宿主细胞APOBEC3的抗病毒作用。在这里,我们讨论了牛APOBEC3和以下两种牛慢病毒:牛免疫缺陷病毒(BIV)和詹布拉那病病毒(JDV)的共同进化动力学。对牛属和野牛属的3个APOBEC3基因序列进行了分析,结果表明,牛的APOBEC3Z3基因具有很强的正选择作用。我们发现,牛科动物gaur的APOBEC3Z3在与其他牛科动物分离后,通过转换环1结构域的结构组成,获得了对JDV vif介导降解的抗性。有趣的是,APOBEC3Z3的抗性可归因于残基62的正选择。这项研究提供了第一个证据,表明牛科动物和慢病毒之间的共同进化军备竞赛发生在亚洲。
Mammals have co-evolved with lentiviruses for a long time. As evidence, viral infectivity factor (Vif), encoded by lentiviruses, antagonizes the anti-viral action of cellular APOBEC3 of their hosts. Here, we address the co-evolutionary dynamics of bovine APOBEC3 and the following two bovine lentiviruses: bovine immunodeficiency virus (BIV) and Jembrana disease virus (JDV). We determined the sequences of three APOBEC3 genes of bovids belonging to the genera Bos and Bison and showed that bovine APOBEC3Z3 is under a strong positive selection. We found that APOBEC3Z3 of gaur, a bovid in the genus Bos, acquired resistance to JDV Vif-mediated degradation after diverging from the other bovids through conversion of the structural composition of the loop 1 domain. Interestingly, the resistance of gaur APOBEC3Z3 can be attributed to the positive selection of residue 62. This study provides the first evidence, suggesting that a co-evolutionary arms race between bovids and lentiviruses occurred in Asia.
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