Abstract
Muscle contraction involves the regulation of the interaction between actin and myosin (acto-myosin) by the regulatory protein complex, troponin-tropomyosin (Tn-TM). The troponin (Tn) subunits (TnC, TnI, TnT) interact with each other and work in concert with actin-TM to produce conformational changes which alter the acto-myosin interaction. When F-actin binds the myosin head, activation of the ATP hydrolysis rate occurs causing an increase in the release of Pi, thereby increasing the rate of cross-bridge cycling.
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© 1991 Springer-Verlag Berlin Heidelberg
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Van Eyk, J.E., Sönnichsen, F.D., Sykes, B.D., Hodges, R.S. (1991). Interaction of Actin 1–28 with Myosin and Troponin I and the Importance of These Interactions to Muscle Regulation. In: Rüegg, J.C. (eds) Peptides as Probes in Muscle Research. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76409-7_3
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DOI: https://doi.org/10.1007/978-3-642-76409-7_3
Publisher Name: Springer, Berlin, Heidelberg
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