6 Questions
What is the structure of each actin (thin) filament?
Made of two G actins helically wound to each other
What constitutes one thick filament in muscle cells?
Meromyosins
What are the two important parts of a meromyosin?
Heavy meromyosin and light meromyosin
What type of enzyme is the globular head of meromyosin?
ATPase enzyme
What protein masks the active binding sites for myosin on the actin filaments in the resting state?
Troponin
Where are the CA Actin binding sites located?
On F actins
Learn about the detailed structure of contractile proteins, including actin filaments, tropomyosin, and troponin. Understand how these proteins interact to regulate muscle contraction.
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