BST-2 mediated restriction of simian-human immunodeficiency virus.
BST-2 mediated restriction of simian-human immunodeficiency virus.
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DOI:
10.1016/j.virol.2010.07.021
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发表时间:
2010-10-25
期刊:
影响因子:
3.7
通讯作者:
Stephens EB
中科院分区:
文献类型:
--
作者:
Ruiz A;Lau D;Mitchell RS;Hill MS;Schmitt K;Guatelli JC;Stephens EB
Pathogenic simian-human immunodeficiency viruses (SHIV)contain HIV-1 Vpu and SIV Nef, both shown to counteract BST-2 (HM1.24; CD317; tetherin) inhibition of virus release in a species-specific manner. We show that human and pig-tailed BST-2 (ptBST-2) restrict SHIV. We found that sequential “humanize” of the transmembrane domain (TMD) of the pig-tailed BST-2 (ptBST-2) protein resulted in a fluctuation in sensitivity to HIV-1 Vpu. Our results also show that the length of the TMD in human and ptBST-2 proteins is important for BST-2 restriction and susceptibility to Vpu. Taken together, our results emphasize the importance of tertiary structure in BST-2 antagonism and suggests that the HIV-1 Vpu transmembrane domain may have additional functions in vivo unrelated to BST-2 antagonism.
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