Do thin filaments of smooth muscle contain calponin?
Do thin filaments of smooth muscle contain calponin?
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平滑肌细丝含有钙调蛋白吗?
DOI:
10.1016/0014-5793(90)80999-y
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发表时间:
1990
期刊:
影响因子:
3.5
通讯作者:
K. Hiwada
中科院分区:
文献类型:
--
作者:
W. Nishida;M. Abe;Katsuhito Takahashi;K. Hiwada
A new method for the preparation of smooth muscle thin filaments which include calponin was established. We found that calponin readily separated from thin filaments in the presence of 10 mM ATP. By preventing thin filament extract from exposing to ATP, we obtained thin filaments which contained actin, tropomyosin, caldesmon and calponin in molar ratios of 7:0.9:0.6:0.7. We studied myosin Mg-ATPase activity by using the thin filaments in comparison with classical thin filaments prepared by the method of Marston and Smith, which contained the same amounts of caldesmon and tropomyosin as our thin filaments but lost almost all calponin. The presence of calponin reduced theVmaxvalue for thin filament-activated myosin Mg-ATPase activity by 33% without a significant change inKmvalue. These findings suggest that calponin inhibits myosin Mg-ATPase activity by modulation of a kinetic step as an integral component of smooth muscle thin filaments.
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影响因子:
3.6
作者:
Silver,PJ;Stull,JT
通讯作者:
Stull,JT
DOI:
10.1016/0167-4838(89)90094-0
发表时间:
1989
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Lehman,W
通讯作者:
Lehman,W
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bryan,J;Imai,M;Lee,R;Moore,P;Cook,RG;Lin,WG
通讯作者:
Lin,WG
影响因子:
2.9
作者:
Heaslip,RJ;Chacko,S
通讯作者:
Chacko,S
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ishikawa,R;Yamashiro,S;Matsumura,F
通讯作者:
Matsumura,F