Binding of antigen to antibody is through

Options

A. A.Electrostatic interactions
B. B.Covalent bonds
C. C.Issacs and Lindermann
D. D.Randles

Answer

To answer the question "Binding of antigen to antibody is through," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Antigens and Antibodies**:
- Antigens are foreign molecules that enter the body and trigger an immune response.
- Antibodies are proteins produced by the immune system that specifically bind to antigens.

2. **Identifying the Binding Site**:
- The specific region on the antibody that interacts with the antigen is known as the antigen-binding site.

3. **Nature of the Binding**:
- The binding between antigens and antibodies is not through strong covalent bonds but rather through weaker interactions.
- These interactions are crucial for the specificity and reversibility of the binding.

4. **Types of Interactions**:
- The interactions that facilitate the binding of antigens to antibodies include:
- Electrostatic interactions
- Hydrogen bonding
- Van der Waals forces
- Hydrophobic interactions

5. **Selecting the Correct Option**:
- Among the options provided, "electrostatic interactions" is a type of non-covalent interaction that plays a significant role in the binding of antigens to antibodies.
- Therefore, the correct answer to the question is **electrostatic interactions**.

### Final Answer:
The binding of antigen to antibody is through **electrostatic interactions**.

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