An antibody molecule is made of four polypeptide chains—two identical heavy chains and two identical and smaller light chains, with a total molecular weight of approximately 150 kDa. Each chain is made up of a series of structurally similar domains known as immunoglobulin domains.

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16-12-2022
Biology

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An antibody molecule is made of four polypeptide chains—two identical heavy chains and two identical and smaller light chains, with a total molecular weight of approximately 150 kDa. Each chain is made up of a series of structurally similar domains known as immunoglobulin domains.

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RajarshiG RajarshiG · Answer 1 · 2022-12-20T01:57:28-05:00

The heavy chains are connected to each other by disulfide bonds. The light chains are connected to the heavy chains by non-covalent interactions. The amino acid sequences of the heavy and light chains are unique for each antibody,

And determine the specificity and affinity of the antibody for its target antigen. The antigen binding site of the antibody is formed by the variable domains of the heavy and light chains.An antibody is a type of protein produced by the immune system that is designed to identify and help eliminate foreign substances, such as bacteria and viruses, from the body. Antibodies are typically Y-shaped and are made up of four polypeptide chains, two identical heavy chains and two identical light chains. Each chain contains a variable region, which is responsible for recognizing and binding to a specific antigen, and a constant region, which helps to activate other parts of the immune system. Antibodies are produced by B-cells and are used to target and neutralize antigens in the body by binding to them and making them easier for other immune cells to recognize and destroy. The binding of an antibody to an antigen can also initiate the process of antibody-mediated immunity, which is the body's primary defense against pathogens.

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