Calcium-induced structural transition in the regulatory domain of human cardiac troponin C.
Spyracopoulos, L., Li, M.X., Sia, S.K., Gagne, S.M., Chandra, M., Solaro, R.J., Sykes, B.D.(1997) Biochemistry 36: 12138-12146
- PubMed: 9315850 
- DOI: 10.1021/bi971223d
- Primary Citation of Related Structures:  
1AP4, 1SPY - PubMed Abstract: 
While calcium binding to troponin C (TnC) triggers the contraction of both skeletal and cardiac muscle, there is clear evidence that different mechanisms may be involved. For example, activation of heart myofilaments occurs with binding to a single regulatory site on TnC, whereas activation of fast skeletal myofilaments occurs with binding to two regulatory sites ...