A picornaviral loop-to-loop replication complex.
A picornaviral loop-to-loop replication complex.
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DOI:
10.1016/j.jsb.2009.02.010
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发表时间:
2009-06
影响因子:
3
通讯作者:
Pascal SM
中科院分区:
文献类型:
--
作者:
Claridge JK;Headey SJ;Chow JY;Schwalbe M;Edwards PJ;Jeffries CM;Venugopal H;Trewhella J;Pascal SM
Picornaviruses replicate their RNA genomes through a highly conserved mechanism that involves an interaction between the principal viral protease (3Cpro) and the 5′-UTR region of the viral genome. The 3Cpro catalytic site is the target of numerous replication inhibitors. This paper describes the first structural model of a complex between a picornaviral 3Cpro and a region of the 5′-UTR, stem-loop D (SLD). Using human rhinovirus as a model system, we have combined NMR contact information, small-angle X-ray scattering (SAXS) data, and previous mutagenesis results to determine the shape, position and relative orientation of the 3Cpro and SLD components. The results clearly identify a 1:1 binding stoichiometry, with pronounced loops from each molecule providing the key binding determinants for the interaction. Binding between SLD and 3Cpro induces structural changes in the proteolytic active site that is positioned on the opposite side of the protease relative to the RNA/protein interface, suggesting that subtle conformational changes affecting catalytic activity are relayed through the protein.
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影响因子:
3.5
作者:
GORBALENYA, AE;DONCHENKO, AP;KOONIN, EV
通讯作者:
KOONIN, EV
影响因子:
2.9
作者:
Bjorndahl, Trent C.;Andrew, Lena C.;Wishart, David S.
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Wishart, David S.
影响因子:
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作者:
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通讯作者:
Svergun, DI
影响因子:
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作者:
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通讯作者:
Grzesiek, S
影响因子:
4.5
作者:
Headey, Stephen J.;Huang, He;Pascal, Steven M.
通讯作者:
Pascal, Steven M.