Please define and describe the role/ significance of the following protein complexes in relation to the sliding filament theory : troponin,...

 Please define and describe the role/ significance of the following protein complexes in relation to the sliding filament theory: troponin, tropomyosin, troponin and tropomyosin, actin, myosin. No need for whitewashing the answer, I can keep up i think. Thanks in advance!