Tropomyosin flexural rigidity and single ca(2+) regulatory unit dynamics: implications for cooperative regulation of cardiac muscle contraction and cardiomyocyte hypertrophy.

Tropomyosin flexural rigidity and single ca(2+) regulatory unit dynamics: implications for cooperative regulation of cardiac muscle contraction and cardiomyocyte hypertrophy.
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DOI:
10.3389/fphys.2012.00080
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发表时间:
2012
影响因子:
4
通讯作者:
Chase PB
Chase PB
中科院分区:
医学2区
文献类型:
--
作者:
Loong CK;Badr MA;Chase PB

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横纹肌收缩由细丝上 Ca2+、肌钙蛋白和原肌球蛋白之间的动态和协作相互作用调节。虽然 Ca2+ 调节已被广泛研究,但人们对单个调节单元的动态和单个原肌球蛋白分子与其机械特性相关的结构变化,以及这些因素如何因 Ca2+ 调节蛋白中的心肌病突变而改变,知之甚少。在这篇假设论文中,我们探讨了各种实验和分析方法如何扩大我们对健康和疾病中心脏收缩协同调节的理解。
Striated muscle contraction is regulated by dynamic and cooperative interactions among Ca2+, troponin, and tropomyosin on the thin filament. While Ca2+ regulation has been extensively studied, little is known about the dynamics of individual regulatory units and structural changes of individual tropomyosin molecules in relation to their mechanical properties, and how these factors are altered by cardiomyopathy mutations in the Ca2+ regulatory proteins. In this hypothesis paper, we explore how various experimental and analytical approaches could broaden our understanding of the cooperative regulation of cardiac contraction in health and disease.
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