| Literature DB >> 26526134 |
Juan-Juan Sheng1, Jian-Ping Jin2.
Abstract
Troponin I (TnI) is the inhibitory subunit of the troponin complex in the sarcomeric thin filament of striated muscle and plays a central role in the calcium regulation of contraction and relaxation. Vertebrate TnI has evolved into three isoforms encoded by three homologous genes: TNNI1 for slow skeletal muscle TnI, TNNI2 for fast skeletal muscle TnI and TNNI3 for cardiac TnI, which are expressed under muscle type-specific and developmental regulations. To summarize the current knowledge on the TnI isoform genes and products, this review focuses on the evolution, gene regulation, posttranslational modifications, and structure-function relationship of TnI isoform proteins. Their physiological and medical significances are also discussed.Entities:
Keywords: Cardiac and skeletal muscle; Evolution; Gene regulation; Isoform; Posttranslational modification; Troponin I
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Year: 2015 PMID: 26526134 PMCID: PMC5798203 DOI: 10.1016/j.gene.2015.10.052
Source DB: PubMed Journal: Gene ISSN: 0378-1119 Impact factor: 3.688