A protein having both structural and enzymatic traits is

Options

A. Myosin
B. Collagen
C. Trypsin
D. Actin

Answer

To solve the question regarding which protein has both structural and enzymatic traits, we can analyze the options provided:

1. **Understanding the Traits**:
- **Structural Trait**: This refers to proteins that maintain the structure or support the body. They play a crucial role in forming the framework of cells and tissues.
- **Enzymatic Trait**: This refers to proteins that act as enzymes, facilitating biochemical reactions in the body.

2. **Analyzing the Options**:
- **Option A: Myosin**:
- Myosin is a muscle protein that forms the contractile filaments in muscle cells.
- It has a structural role by maintaining the muscle structure.
- Myosin also exhibits enzymatic activity by converting chemical energy into mechanical energy during muscle contraction.
- Therefore, myosin satisfies both conditions: it has structural and enzymatic traits.

- **Option B: Collagen**:
- Collagen is a structural protein found in connective tissues.
- It plays a significant role in maintaining the structure of the body.
- However, collagen does not exhibit any enzymatic activity.
- Thus, it does not satisfy the enzymatic condition.

- **Option C: Trypsin**:
- Trypsin is a digestive enzyme that breaks down proteins in the intestine.
- It has enzymatic activity but does not have any structural role.
- Therefore, trypsin does not satisfy the structural condition.

- **Option D: Actin**:
- Actin is another protein involved in muscle contraction, similar to myosin.
- It primarily serves a structural role in muscle cells.
- Actin does not exhibit enzymatic activity.
- Hence, it does not satisfy the enzymatic condition.

3. **Conclusion**:
- After analyzing all the options, the only protein that exhibits both structural and enzymatic traits is **Myosin** (Option A).

**Final Answer**: Myosin

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