Rigor to post-rigor transition in myosin V: link between the dynamics and the supporting architecture.
Rigor to post-rigor transition in myosin V: link between the dynamics and the supporting architecture.
复制标题
肌球蛋白 V 的严格性到后严格性转变:动力学与支持架构之间的联系。
DOI:
10.1016/j.str.2010.01.019
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
Thirumalai,D
中科院分区:
文献类型:
--
作者:
Tehver,Riina;Thirumalai,D
The detachment kinetics from actin upon ATP binding is a key step in the reaction cycle of myosin V. We show that a network of residues, constituting the allostery wiring diagram (AWD), that trigger the rigor (R) to post-rigor (PR) transition, span key structural elements from the ATP and actin-binding regions. Several of the residues are in the 33 residue helix (H18), P loop, and switch I. Brownian dynamics simulations show that a hierarchy of kinetically controlled local structural changes leads to the opening of the "cleft" region, resulting in the detachment of the motor domain from actin. Movements in switch I and P loop facilitate changes in the rest of the motor domain, in particular the rotation of H18, whose stiffness within the motor domain is crucial in the R → PR transition. The finding that residues in the AWD also drive the kinetics of the R → PR transition shows how the myosin architecture regulates the allosteric movements during the reaction cycle.
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DOI:
10.1073/pnas.96.24.13726
发表时间:
1999-11-23
影响因子:
11.1
作者:
De La Cruz, EM;Wells, AL;Sweeney, HL
通讯作者:
Sweeney, HL
影响因子:
21.3
作者:
Murphy, CT;Rock, RS;Spudich, JA
通讯作者:
Spudich, JA
DOI:
10.1146/annurev.cellbio.12.1.543
发表时间:
1996
影响因子:
11.3
作者:
K. Ruppel;J. Spudich
通讯作者:
J. Spudich
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
N. Laurendeau
通讯作者:
N. Laurendeau
DOI:
10.1016/s0021-9258(17)42067-9
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
H. Sweeney;A. Straceski;L. Leinwand;B. Tikunov;L. Faust
通讯作者:
L. Faust