Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 39, Issue 9, Pages 373-380Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2014.07.001
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Funding
- Public Health Services Grant NIH/NIGM [R01GM110568]
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HIV-1 viral infectivity factor (Vif) is a viral accessory protein that is required for HIV-1 infection due largely to its role in recruiting antiretroviral factors of the APO-BEC3 (apolipoprotein B editing catalytic subunit-like 3) family to an E3 ubiquitin ligase complex for polyubiquitylation and proteasomal degradation. The crystal structure of the (near) full-length Vif protein in complex with Elongin (Elo)B/C, core-binding factor (CBF)beta and Cullin (Cul)5 revealed that Vif has a novel structural fold. In our opinion the structural data revealed not only the protein protein interaction sites that determine Vif stability and interaction with cellular proteins, but also motifs driving Vif homodimerization, which are essential in Vif functionality and HIV-1 infection. Vif-mediated protein protein interactions are excellent targets for a new class of antiretroviral therapeutics to combat AIDS.
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