Conformational change study of dengue virus NS2B-NS3 protease using 19F NMR spectroscopy.
Conformational change study of dengue virus NS2B-NS3 protease using 19F NMR spectroscopy.
复制标题
使用 19F NMR 光谱研究登革热病毒 NS2B-NS3 蛋白酶的构象变化。
DOI:
10.1016/j.bbrc.2015.04.090
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发表时间:
2015-06
期刊:
影响因子:
--
通讯作者:
Wang, Junfeng
中科院分区:
文献类型:
--
作者:
Li, Hua;Sun, Hongbin;Liu, Jinsong;Wang, Junfeng
The dengue virus NS2B-NS3 protease (NS2B-NS3p), an important antiviral target for drug development, has been reported to adopt an open or closed conformation in crystal structures with different NS2B C-terminus (NS2Bc) positioning. In solution, nevertheless, NS2B-NS3p forms a mixture of open, closed and maybe other intermediate conformations, which is difficult to characterize using conventional biophysical and biochemical techniques. In this study, we developed a new strategy to analyze these conformational changes using19F NMR spectroscopy. Low pH or bovine pancreatic trypsin inhibitor (BPTI) binding promote the conformation change from open to closed, showing the importance of charge forces in the interaction between NS2Bc and NS3p. The mutation H51A impairs the charge interaction and the pH dependence of the conformational changes. It stabilizes the open conformation, while the addition of BPTI still converts NS2B-NS3p from open to closed conformation.
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影响因子:
--
作者:
Peter S. C. Wu;K. Ozawa;S. Lim;S. Vasudevan;N. Dixon;G. Otting
通讯作者:
Peter S. C. Wu;K. Ozawa;S. Lim;S. Vasudevan;N. Dixon;G. Otting
影响因子:
16.8
作者:
Erbel, P;Schiering, N;Hommel, U
通讯作者:
Hommel, U
影响因子:
3.9
作者:
M. Jacobs;P. Young
通讯作者:
M. Jacobs;P. Young
DOI:
10.1016/0006-291x(78)91435-3
发表时间:
1978-01-01
影响因子:
3.1
作者:
HUESTIS, WH;RAFTERY, MA
通讯作者:
RAFTERY, MA
影响因子:
8
作者:
Aleshin, Alexander E.;Shiryaev, Sergey A.;Liddington, Robert C.
通讯作者:
Liddington, Robert C.