Dynamic conformational changes in the rhesus TRIM5α dimer dictate the potency of HIV-1 restriction.
Dynamic conformational changes in the rhesus TRIM5α dimer dictate the potency of HIV-1 restriction.
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恒河猴 TRIM5α 二聚体的动态构象变化决定了 HIV-1 限制的效力。
DOI:
10.1016/j.virol.2016.10.003
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发表时间:
2017
期刊:
影响因子:
3.7
通讯作者:
Campbell,EdwardM
中科院分区:
文献类型:
--
作者:
Lamichhane,Rajan;Mukherjee,Santanu;Smolin,Nikolai;Pauszek3rd,RaymondF;Bradley,Margret;Sastri,Jaya;Robia,SethL;Millar,David;Campbell,EdwardM
The TRIM5α protein from rhesus macaques (rhTRIM5α) mediates a potent inhibition of HIV-1 infection via a mechanism that involves the abortive disassembly of the viral core. We have demonstrated that alpha-helical elements within the Linker 2 (L2) region, which lies between the SPRY domain and the Coiled-Coil domain, influence the potency of restriction. Here, we utilize single-molecule FRET analysis to reveal that the L2 region of the TRIM5α dimer undergoes dynamic conformational changes, which results in the displacement of L2 regions by 25 angstroms relative to each other. Analysis of restriction enhancing or abrogating mutations in the L2 region reveal that restriction defective mutants are unable to undergo dynamic conformational changes and do not assume compact, alpha-helical conformations in the L2 region. These data suggest a model in which conformational changes in the L2 region mediate displacement of CA bound SPRY domains to induce the destabilization of assembled capsid during restriction.
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影响因子:
2.9
作者:
Kovalskyy DB;Ivanov DN
通讯作者:
Ivanov DN
影响因子:
3.4
作者:
Rajan Lamichhane;S. Berezhna;Edwin Van;der Schans;D. Millar
通讯作者:
D. Millar
影响因子:
3.3
作者:
E. Campbell;M. P. Dodding;M. Yap;Xiaolu Wu;S. Gallois-Montbrun;M. Malim;J. Stoye;T. Hope
通讯作者:
E. Campbell;M. P. Dodding;M. Yap;Xiaolu Wu;S. Gallois-Montbrun;M. Malim;J. Stoye;T. Hope
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:
Sastri J;O'Connor C;Danielson CM;McRaven M;Perez P;Diaz-Griffero F;Campbell EM
通讯作者:
Campbell EM