Which of the following is an antiviral protein?

Options

A. Terramycin
B. Penicillin
C. Statins
D. Interferon

Answer

To determine which of the following options is an antiviral protein, we will analyze each option provided in the question: teramycin, penicillin, statins, and interferon.

### Step-by-Step Solution:

1. **Identify the options:**
- Teramycin
- Penicillin
- Statins
- Interferon

2. **Analyze Teramycin:**
- Teramycin is an antibiotic. Antibiotics are substances that kill or inhibit the growth of bacteria. They are not effective against viruses. Therefore, teramycin is not an antiviral protein.

3. **Analyze Penicillin:**
- Penicillin is also an antibiotic. Similar to teramycin, it works against bacterial infections and does not have any effect on viruses. Thus, penicillin is not an antiviral protein.

4. **Analyze Statins:**
- Statins are a class of drugs used to lower cholesterol levels in the blood. They work by inhibiting HMG-CoA reductase, an enzyme involved in cholesterol synthesis. Statins do not have antiviral properties, so they are not antiviral proteins.

5. **Analyze Interferon:**
- Interferons are proteins produced by the body in response to viral infections. They play a crucial role in the immune response by interfering with viral replication within host cells. Therefore, interferons are classified as antiviral proteins.

6. **Conclusion:**
- After analyzing all the options, the only antiviral protein among the choices is **Interferon**.

### Final Answer:
The correct answer is **Interferon**.

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