Structural Insights into HIV-1 Vif-APOBEC3F Interaction
نویسندگان
چکیده
منابع مشابه
APOBEC3F determinants of HIV-1 Vif sensitivity.
HIV-1 Vif counteracts restrictive APOBEC3 proteins by targeting them for proteasomal degradation. To determine the regions mediating sensitivity to Vif, we compared human APOBEC3F, which is HIV-1 Vif sensitive, with rhesus APOBEC3F, which is HIV-1 Vif resistant. Rhesus-human APOBEC3F chimeras and amino acid substitution mutants were tested for sensitivity to HIV-1 Vif. This approach identified ...
متن کاملStructural determinants of HIV-1 Vif susceptibility and DNA binding in APOBEC3F
The human APOBEC3 family of DNA cytosine deaminases serves as a front-line intrinsic immune response to inhibit the replication of diverse retroviruses. APOBEC3F and APOBEC3G are the most potent factors against HIV-1. As a countermeasure, HIV-1 viral infectivity factor (Vif) targets APOBEC3s for proteasomal degradation. Here we report the crystal structure of the Vif-binding domain in APOBEC3F ...
متن کاملDifferent interaction between HIV-1 Vif and its cellular target proteins APOBEC3G/APOBEC3F.
We examined a series of site-directed point mutants of human immunodeficiency virus type 1 (HIV-1) Vif for their interaction with cellular anti-viral factors APOBEC3G/APOBEC3F. Mutant viruses that display growth-defect in H9 cells did not counteract effectively APOBEC3G and/or APOBEC3F without exception, as monitored by single-cycle infectivity assays. While growth-defective mutants of Vif C-te...
متن کاملInsight into the HIV-1 Vif SOCS-box–ElonginBC interaction
The HIV-1 viral infectivity factor (Vif) neutralizes cell-encoded antiviral APOBEC3 proteins by recruiting a cellular ElonginB (EloB)/ElonginC (EloC)/Cullin5-containing ubiquitin ligase complex, resulting in APOBEC3 ubiquitination and proteolysis. The suppressors-of-cytokine-signalling-like domain (SOCS-box) of HIV-1 Vif is essential for E3 ligase engagement, and contains a BC box as well as an...
متن کاملA second human antiretroviral factor, APOBEC3F, is suppressed by the HIV-1 and HIV-2 Vif proteins.
The HIV-1 Vif protein suppresses the inhibition of viral replication caused by the human antiretroviral factor APOBEC3G. As a result, HIV-1 mutants that do not express the Vif protein are replication incompetent in 'nonpermissive' cells, such as primary T cells and the T-cell line CEM, that express APOBEC3G. In contrast, Vif-defective HIV-1 replicates effectively in 'permissive' cell lines, suc...
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ژورنال
عنوان ژورنال: Journal of Virology
سال: 2016
ISSN: 0022-538X,1098-5514
DOI: 10.1128/jvi.02369-15