Visualization of a proteasome-independent intermediate during restriction of HIV-1 by rhesus TRIM5alpha.
Visualization of a proteasome-independent intermediate during restriction of HIV-1 by rhesus TRIM5alpha.
复制标题
在恒河体限制HIV-1时,可视化蛋白酶体的中间体。
DOI:
10.1083/jcb.200706154
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发表时间:
2008-02-11
影响因子:
7.8
通讯作者:
Hope, Thomas J.
中科院分区:
文献类型:
--
作者:
Campbell, Edward M.;Perez, Omar;Anderson, Jenny L.;Hope, Thomas J.
TRIM5 proteins constitute a class of restriction factors that prevent host cell infection by retroviruses from different species. TRIM5α restricts retroviral infection early after viral entry, before the generation of viral reverse transcription products. However, the underlying restriction mechanism remains unclear. In this study, we show that during rhesus macaque TRIM5α (rhTRIM5α)–mediated restriction of HIV-1 infection, cytoplasmic HIV-1 viral complexes can associate with concentrations of TRIM5α protein termed cytoplasmic bodies. We observe a dynamic interaction between rhTRIM5α and cytoplasmic HIV-1 viral complexes, including the de novo formation of rhTRIM5α cytoplasmic body–like structures around viral complexes. We observe that proteasome inhibition allows HIV-1 to remain stably sequestered into large rhTRIM5α cytoplasmic bodies, preventing the clearance of HIV-1 viral complexes from the cytoplasm and revealing an intermediate in the restriction process. Furthermore, we can measure no loss of capsid protein from viral complexes arrested at this intermediate step in restriction, suggesting that any rhTRIM5α-mediated loss of capsid protein requires proteasome activity.
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影响因子:
3.3
作者:
Campbell, Edward M.;Dodding, Mark P.;Hope, Thomas J.
通讯作者:
Hope, Thomas J.
影响因子:
3.7
作者:
Campbell, Edward M.;Perez, Omar;Hope, Thomas J.
通讯作者:
Hope, Thomas J.
影响因子:
4.8
作者:
Chatterji, Udayan;Bobardt, Michael D.;Gallay, Philippe A.
通讯作者:
Gallay, Philippe A.
DOI:
10.1073/pnas.0403364101
发表时间:
2004-08-10
影响因子:
11.1
作者:
Perron, MJ;Stremlau, M;Sodroski, J
通讯作者:
Sodroski, J
DOI:
10.1073/pnas.200286297
发表时间:
2000-10-24
影响因子:
11.1
作者:
Towers, G;Bock, M;Danos, O
通讯作者:
Danos, O