Structural, biochemical, and in vivo characterization of the first virally encoded cyclophilin from the Mimivirus.
Structural, biochemical, and in vivo characterization of the first virally encoded cyclophilin from the Mimivirus.
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DOI:
10.1016/j.jmb.2007.08.051
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发表时间:
2008-04-18
影响因子:
5.6
通讯作者:
Eisenmosser, Elan Z.
中科院分区:
文献类型:
--
作者:
Thai, Vu;Renesto, Patricia;Fowler, C. Andrew;Browni, Darin J.;Davis, Tara;Gu, Wanjun;Pollock, David D.;Kern, Dorothee;Raoult, Didier;Eisenmosser, Elan Z.
Although multiple viruses utilize host cell cyclophilins, including severe acute respiratory syndrome (SARS) and human immunodeficiency virus type-1(HIV-1), their role in infection is poorly understood. To help elucidate these roles, we have characterized the first virally encoded cyclophilin (mimicyp) derived from the largest virus discovered to date (the Mimivirus) that is also a causative agent of pneumonia in humans. Mimicyp adopts a typical cyclophilin-fold, yet it also forms trimers unlike any previously characterized homologue. Strikingly, immunofluorescence assays reveal that mimicyp localizes to the surface of the mature virion, as recently proposed for several viruses that recruit host cell cyclophilins such as SARS and HIV-1. Additionally mimicyp lacks peptidyl-prolyl isomerase activity in contrast to human cyclophilins. Thus, this study suggests that cyclophilins, whether recruited from host cells (i.e. HIV-1 and SARS) or virally encoded (i.e. Mimivirus), are localized on viral surfaces for at least a subset of viruses.
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DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
5.4
作者:
Braaten, D;Franke, EK;Luban, J
通讯作者:
Luban, J
影响因子:
4.4
作者:
Arora, K;Gwinn, WM;Constant, SL
通讯作者:
Constant, SL
DOI:
10.1038/nsb927
发表时间:
2003-06-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Howard, BR;Vajdos, FF;Hill, CP
通讯作者:
Hill, CP
影响因子:
2.9
作者:
FEJZO, J;ETZKORN, FA;WAGNER, G
通讯作者:
WAGNER, G