Myosin polymorphism and differential expression in adult human skeletal muscle
- PMID: 8281747
- DOI: 10.1016/0305-0491(93)90120-t
Myosin polymorphism and differential expression in adult human skeletal muscle
Abstract
1. Myosin heavy chain (HC) and light chain (LC) isoforms are expressed in a tissue-specific and developmentally-regulated manner in human skeletal muscle. 2. At least seven myosin HC isoforms are expressed in skeletal muscle of the adult. 3. Histochemically-delineated fibre types (based on the stability of myofibrillar actomyosin adenosine triphosphatase activity) in limb muscles correlate with the myosin HC content. 4. Alterations in the phenotypic expression of myosin provides a mechanism of adaptation to stresses placed upon the muscle (e.g. increased and decreased usage).
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