Protein functional dynamics from the rigorous global analysis of DEER data: Conditions, components, and conformations.
Protein functional dynamics from the rigorous global analysis of DEER data: Conditions, components, and conformations.
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DOI:
10.1085/jgp.201711954
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发表时间:
2021-11-01
期刊:
影响因子:
--
通讯作者:
Mchaourab HS
中科院分区:
文献类型:
--
作者:
Hustedt EJ;Stein RA;Mchaourab HS
DEER spectroscopy can be used to investigate the conformational equilibria of proteins. In this tutorial, we illustrate the rigorous global analysis of DEER data to quantitively analyze these equilibria to determine the populations of distinct intermediates under varying biochemical conditions. The potential of spin labeling to reveal the dynamic dimension of macromolecules has been recognized since the dawn of the methodology in the 1960s. However, it was the development of pulsed electron paramagnetic resonance spectroscopy to detect dipolar coupling between spin labels and the availability of turnkey instrumentation in the 21st century that realized the full promise of spin labeling. Double electron-electron resonance (DEER) spectroscopy has seen widespread applications to channels, transporters, and receptors. In these studies, distance distributions between pairs of spin labels obtained under different biochemical conditions report the conformational states of macromolecules, illuminating the key movements underlying biological function. These experimental studies have spurred the development of methods for the rigorous analysis of DEER spectroscopic data along with methods for integrating these distributions into structural models. In this tutorial, we describe a model-based approach to obtaining a minimum set of components of the distance distribution that correspond to functionally relevant protein conformations with a set of fractional amplitudes that define the equilibrium between these conformations. Importantly, we review and elaborate on the error analysis reflecting the uncertainty in the various parameters, a critical step in rigorous structural interpretation of the spectroscopic data.
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影响因子:
5.8
作者:
Chufan EE;Kapoor K;Ambudkar SV
通讯作者:
Ambudkar SV
影响因子:
64.5
作者:
Dürr KL;Chen L;Stein RA;De Zorzi R;Folea IM;Walz T;Mchaourab HS;Gouaux E
通讯作者:
Gouaux E
影响因子:
9.8
作者:
Dellisanti CD;Ghosh B;Hanson SM;Raspanti JM;Grant VA;Diarra GM;Schuh AM;Satyshur K;Klug CS;Czajkowski C
通讯作者:
Czajkowski C
DOI:
10.1021/acs.jpcb.1c03666
发表时间:
2021-05-27
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
Ackermann K;Wort JL;Bode BE
通讯作者:
Bode BE
影响因子:
2.2
作者:
Chiang, YW;Borbat, PP;Freed, JH
通讯作者:
Freed, JH