The myosin start‐of‐power stroke state and how actin binding drives the power stroke
The myosin start‐of‐power stroke state and how actin binding drives the power stroke
复制标题
肌球蛋白动力冲程开始状态以及肌动蛋白结合如何驱动动力冲程
DOI:
10.1002/cm.21125
复制
发表时间:
2013
期刊:
影响因子:
2.9
通讯作者:
K. Holmes
中科院分区:
文献类型:
--
作者:
M. Preller;K. Holmes
We propose that on binding to actin at the start of the power stroke the myosin cross‐bridge takes on the rigor configuration at the actin interface. Starting from the prepower stroke state, this can be achieved by a small movement (16° rotation) of the lower 50K domain without twisting the central β‐sheet or opening switch‐1 or switch‐2. The movement of the lower 50K domain puts a strain on the W‐helix. This strain tries to twist the β‐sheet, which could drive the power stroke. This would provide a coupling between actin binding and the execution of the power stroke. During the power stroke the β‐sheet twists, moving the P‐loop away from switch‐2, which opens the nucleotide binding pocket and separates ADP from Pi. The power stroke is different from the recovery stroke because the upper and lower 50K domains are tethered in the rigor configuration. © 2013 Wiley Periodicals, Inc.
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DOI:
10.1016/j.str.2010.01.014
发表时间:
2010-03-14
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
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通讯作者:
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影响因子:
64.5
作者:
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影响因子:
3.4
作者:
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通讯作者:
Craig,Roger
影响因子:
16.8
作者:
Fedorov, Roman;Boehl, Markus;Manstein, Dietmar J.
通讯作者:
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