Which of the following is the correct match between the protein and its corresponding prosthetic group?

Options

A. Caesin - Metal
B. Protamines - pigments
C. Catalase - Haem
D. Mucin - Nucleic acid

Answer

To solve the question of which protein correctly matches with its corresponding prosthetic group, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding Prosthetic Groups**:
- Prosthetic groups are non-polypeptide units that are tightly and permanently attached to proteins. They can be metal ions, organic molecules, or other types of compounds that assist in the protein's function.

2. **Analyzing the Options**:
- **Option 1: Casein and Metal**:
- Casein is a milk protein and does not require a metal as a prosthetic group. Therefore, this option is incorrect.

- **Option 2: Protamines and Pigments**:
- Protamines are proteins that are rich in arginine and are typically associated with sperm nuclei. They do not require pigments as prosthetic groups. Thus, this option is also incorrect.

- **Option 3: Mucin and Nuclein**:
- Mucin is a glycoprotein that serves as a lubricant in various bodily secretions. It does not have nuclein as a prosthetic group, making this option incorrect as well.

- **Option 4: Catalase and Heme**:
- Catalase is an enzyme that breaks down hydrogen peroxide into water and oxygen. It contains heme as a prosthetic group, which is crucial for its enzymatic activity. This option is correct.

3. **Conclusion**:
- The correct match between the protein and its corresponding prosthetic group is **Catalase and Heme**.

### Final Answer:
- The correct answer is **Option 4: Catalase and Heme**.