| Literature DB >> 17156811 |
Xing Li1, Bert Gold, Colm O'hUigin, Felipe Diaz-Griffero, Byeongwoon Song, Zhihai Si, Yuan Li, Wen Yuan, Matthew Stremlau, Claudia Mische, Hassan Javanbakht, Mark Scally, Cheryl Winkler, Michael Dean, Joseph Sodroski.
Abstract
The tripartite motif (TRIM) protein, TRIM5alpha, restricts some retroviruses, including human immunodeficiency virus (HIV-1), from infecting the cells of particular species. TRIM proteins contain RING, B-box, coiled-coil and, in some cases, B30.2(SPRY) domains. We investigated the properties of human TRIM family members closely related to TRIM5. These TRIM proteins, like TRIM5alpha, assembled into homotrimers and co-localized in the cytoplasm with TRIM5alpha. TRIM5alpha turned over more rapidly than related TRIM proteins. TRIM5alpha, TRIM34 and TRIM6 associated with HIV-1 capsid-nucleocapsid complexes assembled in vitro; the TRIM5alpha and TRIM34 interactions with these complexes were dependent on their B30.2(SPRY) domains. Only TRIM5alpha potently restricted infection by the retroviruses studied; overexpression of TRIM34 resulted in modest inhibition of simian immunodeficiency virus (SIV(mac)) infection. In contrast to the other TRIM genes examined, TRIM5 exhibited evidence of positive selection. The unique features of TRIM5alpha among its TRIM relatives underscore its special status as an antiviral factor.Entities:
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Year: 2006 PMID： 17156811 DOI： 10.1016/j.virol.2006.10.035
Source DB: PubMed Journal: Virology ISSN： 0042-6822 Impact factor: 3.616