期刊
JOURNAL OF BIOMEDICINE AND BIOTECHNOLOGY
卷 -, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2011/103069
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资金
- NIH [R01-HL083464]
- NHLBI [T32-HL007195-34]
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [R01HL083464, T32HL007195] Funding Source: NIH RePORTER
Efficient striated muscle contraction requires precise assembly and regulation of diverse actin filament systems, most notably the sarcomeric thin filaments of the contractile apparatus. By capping the pointed ends of actin filaments, tropomodulins (Tmods) regulate actin filament assembly, lengths, and stability. Here, we explore the current understanding of the expression patterns, localizations, and functions of Tmods in both cardiac and skeletal muscle. We first describe the mechanisms by which Tmods regulate myofibril assembly and thin filament lengths, as well as the roles of closely related Tmod family variants, the leiomodins (Lmods), in these processes. We also discuss emerging functions for Tmods in the sarcoplasmic reticulum. This paper provides abundant evidence that Tmods are key structural regulators of striated muscle cytoarchitecture and physiology.
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