Cryo-EM structure of the autoinhibited state of myosin-2.
Cryo-EM structure of the autoinhibited state of myosin-2.
复制标题
肌球蛋白 2 自抑制状态的冷冻电镜结构。
DOI:
10.1126/sciadv.abk3273
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发表时间:
2021-12-24
期刊:
影响因子:
13.6
通讯作者:
Chinthalapudi K
中科院分区:
文献类型:
--
作者:
Heissler SM;Arora AS;Billington N;Sellers JR;Chinthalapudi K
10S structure explains myosin-2 regulation. We solved the near-atomic resolution structure of smooth muscle myosin-2 in the autoinhibited state (10S) using single-particle cryo–electron microscopy. The 3.4-Å structure reveals the precise molecular architecture of 10S and the structural basis for myosin-2 regulation. We reveal the position of the phosphorylation sites that control myosin autoinhibition and activation by phosphorylation of the regulatory light chain. Further, we present a previously unidentified conformational state in myosin-2 that traps ADP and Pi produced by the hydrolysis of ATP in the active site. This noncanonical state represents a branch of the myosin enzyme cycle and explains the autoinhibition of the enzyme function of 10S along with its reduced affinity for actin. Together, our structure defines the molecular mechanisms that drive 10S formation, stabilization, and relief by phosphorylation of the regulatory light chain.
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DOI:
10.1073/pnas.1809540115
发表时间:
2018-08-28
影响因子:
11.1
作者:
Anderson, Robert L.;Trivedi, Darshan V.;Spudich, James A.
通讯作者:
Spudich, James A.
影响因子:
13.6
作者:
Kawana M;Sarkar SS;Sutton S;Ruppel KM;Spudich JA
通讯作者:
Spudich JA
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:
Cecchini M;Alexeev Y;Karplus M
通讯作者:
Karplus M
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
5.7
作者:
Garcia-Giustiniani, Diego;Arad, Michael;Monserrat, Lorenzo
通讯作者:
Monserrat, Lorenzo