Calpain proteolysis of free and bound forms of calponin, a troponin T‐like protein in smooth muscle

Calpain proteolysis of free and bound forms of calponin, a troponin T‐like protein in smooth muscle
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钙蛋白酶对游离和结合形式的钙调蛋白(平滑肌中的肌钙蛋白 T 样蛋白)的水解作用

DOI:
10.1016/0014-5793(89)80783-5
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发表时间:
1989
期刊:
影响因子:
3.5
通讯作者:
T. Murachi
T. Murachi
中科院分区:
生物学3区
文献类型:
--
作者:
S. Tsunekawa;Katsuhito Takahashi;M. Abe;K. Hiwada;K. Ozawa;T. Murachi

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相似文献

从鸡胆中提纯的肌钙蛋白T的新同源物Calponin被发现是从人红细胞中提纯的CaPin I最敏感的平滑肌收缩相关蛋白之一。与已报道的肌钙蛋白T不同,与钙调蛋白结合时,钙蛋白的降解速度加快。当钙蛋白以结合形式存在于重组肌动蛋白细丝和天然细丝中时,蛋白质的降解速度明显减慢,说明钙蛋白与肌动蛋白细丝结合紧密。这些观察结果与Calponin是肌动蛋白连接的平滑肌收缩机制的组成部分的观点是一致的。
Calponin, a novel homologue of troponin T, purified from chicken gizzard was found to be one of the most susceptible proteins among smooth muscle contraction‐associated proteins to hydrolysis by calpain I purified from human red blood cells. The high susceptibility of calponin was comparable to that reported for troponin T. The rate of degradation of calponin, unlike caldesmon and myosin light chain kinase, was accelerated when bound to calmodulin. When calponin existed as a bound form in both reconstituted actin filament and native thin filament, the rate of proteolysis was markedly retarded, indicating close association of calponin with actin filament. These observations are compatible with the view that calponin is an integral part of the actin‐linked contractile machinery in smooth muscle.
DOI: --
发表时间: 1987
期刊: The Journal of biological chemistry
影响因子: --
作者:
Lynch,WP;Riseman,VM;Bretscher,A
通讯作者: Bretscher,A
DOI: --
发表时间: 1988
期刊: The Journal of biological chemistry
影响因子: --
作者:
Graceffa,P;Wang,CL;Stafford,WF
通讯作者: Stafford,WF
磷酸化对肌球蛋白肌动蛋白激活的 ATP 酶活性的影响。
DOI: 10.1016/0006-291x(81)91182-7
发表时间: 1981
影响因子: 3.1
作者:
Persechini,A;Mrwa,U;Hartshorne,DJ
通讯作者: Hartshorne,DJ