Major protein in thick filaments of skeletal muscle fibre is

Options

A. Myosin
B. Actin
C. tropomyosin
D. Troponin

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the major protein found in the thick filaments of skeletal muscle fibers.

2. **Identifying Muscle Fiber Components**: Skeletal muscle fibers are composed of two main types of filaments: thick filaments and thin filaments.

3. **Focusing on Thick Filaments**: The thick filaments are primarily made up of one major protein.

4. **Identifying the Major Protein**: The major protein in the thick filaments of skeletal muscle fibers is myosin.

5. **Conclusion**: Therefore, the answer to the question is myosin.

**Final Answer**: The major protein in thick filaments of skeletal muscle fiber is **myosin**.

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