Specific packaging of APOBEC3G into HIV-1 virions is mediated by the nucleocapsid domain of the gag polyprotein precursor
Specific packaging of APOBEC3G into HIV-1 virions is mediated by the nucleocapsid domain of the gag polyprotein precursor
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DOI:
10.1016/j.virol.2004.08.006
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发表时间:
2004-10-25
期刊:
影响因子:
3.7
通讯作者:
Cullen, BR
中科院分区:
文献类型:
--
作者:
Schäfer, A;Bogerd, HP;Cullen, BR
In cells infected by HIV-1 mutants lacking a functional Vif protein, APOBEC3G is specifically packaged into progeny virions and then interferes with the process of virus infection. Here, we show that incorporation of APOBEC3G into HIV-1 virions is mediated by the specific interaction of APOBEC3G with the carboxy-terminal nucleocapsid/p6 domain of the Gag polyprotein precursor. As a result, HIV-1 virus-like particles that lack the nucleocapsid domain fail to package APOBEC3G. Surprisingly, RNA was also found to be essential for formation of the nucleocapsid-APOBEC3G complex in vitro, thus raising the possibility that RNA may form a bridge between these two proteins. (C) 2004 Elsevier Inc. All rights reserved.