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Evolutionarily Conserved Requirement for Core Binding Factor Beta in the Assembly of the Human Immunodeficiency Virus/Simian Immunodeficiency Virus Vif-Cullin 5-RING E3 Ubiquitin Ligase
被引:25
|作者:
Han, Xue
[1
,3
,4
]
Liang, Weizi
[1
]
Hua, Deping
[1
]
Zhou, Xiaohong
[2
,3
]
Du, Juan
[2
]
Evans, Sean L.
[3
]
Gao, Qimeng
[3
]
Wang, Hong
[2
]
Viqueira, Rachel
[5
]
Wei, Wei
[1
,3
]
Zhang, Wenyan
[2
]
Yu, Xiao-Fang
[1
,3
,4
]
机构:
[1] Tianjin Univ, Sch Life Sci, Tianjin 300072, Peoples R China
[2] Jilin Univ, Hosp 1, Inst Virol & AIDS Res, Changchun 130023, Jilin Province, Peoples R China
[3] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Mol Microbiol & Immunol, Baltimore, MD USA
[4] Collaborat Innovat Ctr Chem Sci & Engn, Tianjin, Peoples R China
[5] Johns Hopkins Univ, Dept Biol, Baltimore, MD 21218 USA
关键词:
VIRAL INFECTIVITY FACTOR;
HIV-1;
VIF;
TYPE-1;
CBF-BETA;
APOBEC3G DEGRADATION;
RESTRICTION FACTORS;
DEAMINASE APOBEC3G;
CYTIDINE DEAMINASE;
ANTIVIRAL ACTIVITY;
HOST RESTRICTION;
D O I:
10.1128/JVI.03833-13
中图分类号:
Q93 [微生物学];
学科分类号:
071005 ;
100705 ;
摘要:
The human immunodeficiency virus type 1 (HIV-1)-encoded virion infectivity factor (Vif) is required to inactivate the host restriction factor APOBEC3 by engaging Cullin 5 (Cul5)-RING ubiquitin ligase (CRL5). Core binding factor beta (CBE-beta) is a novel regulator of Vif-CRL5 function; as yet, its mechanism of regulation remains unclear. In the present study, we demonstrate that CBF-beta promotion of Vif-CRL5 assembly is independent of its influence on Vif stability and is also a conserved feature of primate lentiviral Vif proteins. Furthermore, CBF-beta is critical for the formation of the Vif-ElonginB/ElonginC-Cul5 core E3 ubiquitin ligase complex in vitro. CBF-beta from diverse vertebrate species supported HIV-1 Vif function, indicating the conserved nature of Vif CBF-beta interfaces. Considering the importance of the interaction between Vif and CBF-beta in viral CRL5 function, disrupting this interaction represents an attractive pharmacological intervention against HIV-1.
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页码:3320 / 3328
页数:9
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