The mechanism of denaturation and the unfolded state of the α-helical membrane-associated protein Mistic.
The mechanism of denaturation and the unfolded state of the α-helical membrane-associated protein Mistic.
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α螺旋膜相关蛋白Mistic的变性机制和展开状态
DOI:
10.1021/ja408644f
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发表时间:
2013
影响因子:
15
通讯作者:
Reif B
中科院分区:
文献类型:
--
作者:
Jacso T;Bardiaux B;Broecker J;Fiedler S;Barwinkel T;Mainz A;Fink U;Vargas C;Oschkinat H;Keller S;Reif B
In vitroprotein-folding studies using chemical denaturants such as urea are indispensible in elucidating the forces and mechanisms determining the stability, structure, and dynamics of water-soluble proteins. By contrast, α-helical membrane-associated proteins largely evade such approaches because they are resilient to extensive unfolding. We have used optical and NMR spectroscopy to provide an atomistic-level dissection of the effects of urea on the structure and dynamics of the α-helical membrane-associated protein Mistic as well as its interactions with detergent and solvent molecules. In the presence of the zwitterionic detergent lauryl dimethylamine oxide, increasing concentrations of urea result in a complex sequence of conformational changes that go beyond simple two-state unfolding. Exploiting this finding, we report the first high-resolution structural models of the urea denaturation process of an α-helical membrane-associated protein and its completely unfolded state, which contains almost no regular secondary structure but nevertheless retains a topology close to that of the folded state.
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影响因子:
3.9
作者:
Broecker, Jana;Keller, Sandro
通讯作者:
Keller, Sandro
影响因子:
2.9
作者:
Ladokhin, AS;Jayasinghe, S;White, SH
通讯作者:
White, SH
DOI:
--
发表时间:
2011
期刊:
Protein engineering, design & selection : PEDS
影响因子:
--
作者:
D. Debnath;R. Basaiawmoit;K. Nielsen;D. Otzen
通讯作者:
D. Otzen
DOI:
10.1073/pnas.97.11.5796
发表时间:
2000-05-23
影响因子:
11.1
作者:
Eilers, M;Shekar, SC;Fleming, PJ
通讯作者:
Fleming, PJ
影响因子:
6.1
作者:
J. Schellman
通讯作者:
J. Schellman