Mesodynamics in the SARS nucleocapsid measured by NMR field cycling.
Mesodynamics in the SARS nucleocapsid measured by NMR field cycling.
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DOI:
10.1007/s10858-009-9347-6
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发表时间:
2009-09
影响因子:
2.7
通讯作者:
Kern D
中科院分区:
文献类型:
--
作者:
Clarkson MW;Lei M;Eisenmesser EZ;Labeikovsky W;Redfield A;Kern D
Protein motions on all timescales faster than molecular tumbling are encoded in the spectral density. The dissection of complex protein dynamics is typically performed using relaxation rates determined at high and ultra-high field. Here we expand this range of the spectral density to low fields through field cycling using the nucleocapsid protein of the SARS coronavirus as a model system. The field-cycling approach enables site-specific measurements of R 1 at low fields with the sensitivity and resolution of a high-field magnet. These data, together with high-field relaxation and heteronuclear NOE, provide evidence for correlated rigid-body motions of the entire β-hairpin, and corresponding motions of adjacent loops with a time constant of 0.8 ns (mesodynamics). MD simulations substantiate these findings and provide direct verification of the time scale and collective nature of these motions.
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DOI:
10.1002/prot.340110305
发表时间:
1991-01-01
期刊:
PROTEINS-STRUCTURE FUNCTION AND GENETICS
影响因子:
--
作者:
ICHIYE, T;KARPLUS, M
通讯作者:
KARPLUS, M
影响因子:
2.4
作者:
GRUBMULLER, H
通讯作者:
GRUBMULLER, H
影响因子:
2.7
作者:
d'Auvergne, EJ;Gooley, PR
通讯作者:
Gooley, PR
影响因子:
2.9
作者:
Huang, QL;Yu, LP;Olejniczak, ET
通讯作者:
Olejniczak, ET
影响因子:
3
作者:
BROOKS, BR;BRUCCOLERI, RE;KARPLUS, M
通讯作者:
KARPLUS, M