Research Article
Tropomyosin Period 3 Is Essential for Enhancement of Isometric Tension in Thin Filament-Reconstituted Bovine Myocardium
Table 2
Ca2+ sensitivity and cooperativity of activation. *P value ≤.05 compared to nfTm; **P value ≤.01 compared to nfTm; else, P value >.05 (no significant difference from nfTm). The Hill factor and pCa50 (Ca sensitivity) were deduced by fitting the pCa-tension (or pCa-stiffness) data to (1). In all experiments, temperature was 25°C, ionic strength was 200 mM, and pH was adjusted to 7.00. The data were individually fitted to (1), averaged, and tabulated with ±SEM. †Data from [13].
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