Journal of Biophysics / 2009 / Article / Tab 1

Research Article

Tropomyosin Period 3 Is Essential for Enhancement of Isometric Tension in Thin Filament-Reconstituted Bovine Myocardium

Table 1

Resting tension and stiffness. The fibers were relaxed at 0°C in the relaxing solution that contains 40 mM BDM. Tension at pCa7.0 was measured at 25°C as the incremental tension from the relaxed level. All the measured parameters were normalized to , the active tension of the actin filament reconstituted fibers at 25°C. Compared to the nfTm control, all P values are > .05, hence there are no significant differences from nfTm in three parameters measured.

nf (control) Acetyl Units

Number of expts.1718188
Tension at pCa 70.065 ± 0.1130.109 ± 0.0330.196 ± 0.0470.168 ± 0.052
Stiffness at pCa 70.044 ± 0.0150.039 ± 0.0040.040 ± 0.0040.038 ± 0.011
Stiffness at relaxation0.055 ± 0.0220.049 ± 0.0050.044 ± 0.0050.048 ± 0.015

Data obtained together with [13] but were not published.

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