Question

The diagram given below shows an antibody molecule with their parts labelled as $A,B,C,D,E\&F$. Identify the part marked as $A,B,C,D,E$ and $F$

• A. A-Antigen binding site; B-Variable region (of L-Chain); C - Constant region (of L-Chain); D - Light polypeptide chain (L-Chain); E-Heavy polypeptide chain (H-Chain); F - Disulfide bond.
• B. A - Antigen binding site; B-Constant region (of L-Chain); C - Variable region (of L-Chain); D - Light polypeptide chain (L-Chain); E-Heavy polypeptide chain (H-Chain); F - Disulfide bond.
• C. A-Antigen binding site; B-Variable region (of L-Chain); C - Constant region (of L-Chain); D - Heavy polypeptide chain (L-Chain); E - Light polypeptide chain (H-Chain); F - Hydrogen bond
• D. A-Antigen binding site; B-Variable region (of L-Chain); C - Constant region (of L-Chain); D - Light polypeptide chain (L-Chain); E - Heavy polypeptide chain (H-Chain); F - Hydrogen bond

Answer 1

Answer: (A)

In the given diagram of an antibody molecule, the part marked as A, B, C, D, E and F are respectively antigen binding site, variable regions (of L chain), constant region ( of L chain), light polypeptide chain (L chain), heavy polypeptide chain (H chain) and disulfide bond.