Which protein(s) are found in thin myofi laments? A. actin B. actin and tropomyosin C. actin, tropomyosin, and troponin D. actin, myosin, tropomyosin and troponin
Option C. Actin is the important factor of a thin fi lament. Tropomyosin covers the biding site, at the same time as troponin affords the mechanism for removing tropomyosin from the binding site.
