Pi release from myosin: a simulation analysis of possible pathways.
Pi release from myosin: a simulation analysis of possible pathways.
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DOI:
10.1016/j.str.2010.01.014
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发表时间:
2010-03-14
期刊:
影响因子:
--
通讯作者:
Karplus M
中科院分区:
文献类型:
--
作者:
Cecchini M;Alexeev Y;Karplus M
The release of phosphate (Pi) is an important element in actomyosin function and has been shown to be accelerated by the binding of myosin to actin. To provide information about the structural elements important for Pi release, possible escape pathways from various isolated myosin II structures have been determined by molecular dynamics simulations designed for studying such slow processes. The residues forming the pathways were identified and their role evaluated by mutant simulations. Pi release is slow in the pre-powerstroke structure, an important element in preventing the powerstroke prior to actin binding, and is much more rapid for Pi modeled into the post-rigor and rigor-like structures. The backdoor route suggested by Yount et al. is dominant in the pre-powerstroke and post-rigor states, while a different path is most important in the rigor-like state. This finding suggests a novel mechanism for the actin-activated acceleration of Pi release.
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DOI:
10.1098/rstb.2004.1566
发表时间:
2004-12-29
期刊:
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES
影响因子:
--
作者:
Holmes, KC;Schröder, RR;Houdusse, A
通讯作者:
Houdusse, A
影响因子:
5.6
作者:
L端demann, SK;Lounnas, V;Wade, RC
通讯作者:
Wade, RC
影响因子:
4.8
作者:
Gyimesi, Mate;Kintses, Balint;Malnasi-Csizmadia, Andras
通讯作者:
Malnasi-Csizmadia, Andras
影响因子:
3.4
作者:
Lawson, JD;Pate, E;Yount, RG
通讯作者:
Yount, RG
影响因子:
2.9
作者:
LYMN, RW;TAYLOR, EW
通讯作者:
TAYLOR, EW