Question

What is the role of tropomyosin in skeletal muscles?

Answer 1

here is your answer mate

Tropomyosin serves as a contraction inhibitor by blocking the myosin binding sites on the actin molecules.

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Answer 2

Tropomyosin is a protein involved in muscle contraction.

Sarcomere:

• A sarcomere is the basic unit of muscle contraction.
• It is made of actin (thin) filaments and myosin (thick) filaments.
• During muscle contraction, the length of the sarcomere decreases.

Actin Filaments:

• Actin filaments are made of 2 filamentous actins (protein) helically coiled with one another.
• Two filaments of tropomyosin run along with the actin protein.
• Another protein troponin is distributed on the tropomyosin.

Role of Tropomyosin:

• At rest, tropomyosin covers the myosin-binding site on actin.
• On receiving a signal, troponin removes tropomyosin so that myosin can bind with actin.
• Sliding of actin filaments on myosin causes muscle contraction.