Actin binding domain of Rng2 sparsely bound on F-actin strongly inhibits actin movement on myosin II
Actin binding domain of Rng2 sparsely bound on F-actin strongly inhibits actin movement on myosin II
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Rng2 的肌动蛋白结合域稀疏地结合在 F-肌动蛋白上,强烈抑制肌球蛋白 II 上的肌动蛋白运动
DOI:
10.1101/2020.04.14.041046
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Uyeda Taro Q.P.
中科院分区:
文献类型:
--
作者:
Hayakawa Yuuki;Takaine Masak;Ngo Kien Xuan;Imai Taiga;Yamada Masafumi D.;Behjat Arash Badami;Umeda Kenichi;Hirose Keiko;Yurtsever Ayhan;Kodera Noriyuki;Tokuraku Kiyotaka;Numata Osamu;Fukuma Takeshi;Ando Toshio;Nakano Kentaro;Uyeda Taro Q.P.
We report a case in which sub-stoichiometric binding of an actin-binding protein has profound structural and functional consequences, providing an insight into the fundamental properties of actin regulation. Rng2 is an IQGAP contained in contractile rings in the fission yeastSchizosaccharomyces pombe. Here, we used high-speed atomic force microscopy and electron microscopy and found that sub-stoichiometric binding of the calponin-homology actin-binding domain of Rng2 (Rng2CHD) induces global structural changes in skeletal muscle actin filaments, including shortening of the filament helical pitch. Sub-stoichiometric binding of Rng2CHD also reduced the affinity between actin filaments and muscle myosin II carrying ADP and strongly inhibited the motility of actin filaments on myosin II in vitro. On skeletal muscle myosin II–coated surfaces, Rng2CHD stopped the actin movements at a binding ratio of 11%. Rng2CHD also inhibited actin movements on myosin II of the amoebaDictyostelium, but in this case, by detaching actin filaments from myosin II–coated surfaces. Thus, sparsely bound Rng2CHD induces apparently cooperative structural changes in actin filaments and inhibits force generation by actomyosin II.
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影响因子:
7.7
作者:
Ngo KX;Kodera N;Katayama E;Ando T;Uyeda TQ
通讯作者:
Uyeda TQ
DOI:
--
发表时间:
1996
期刊:
The EMBO journal.
影响因子:
--
作者:
Smith,JL;Silveira,LA;Spudich,JA
通讯作者:
Spudich,JA
DOI:
--
发表时间:
1997
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
J. Kolakowski;A. Karkucińska;R. Da̧browska
通讯作者:
R. Da̧browska
影响因子:
--
作者:
M. Tokunaga;K. Sutoh;T. Wakabayashi
通讯作者:
T. Wakabayashi
DOI:
--
发表时间:
1966
期刊:
Journal of Biochemistry (Tokyo)
影响因子:
--
作者:
S. Ebashi;A. Kodama
通讯作者:
A. Kodama