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Antibodies are immune system-related proteins called immunoglobulins. Each antibody consists of four polypeptides– two heavy chains and two light chains joined to form a "Y" shaped molecule.
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○ Explain structure of antibody with diagram.
Antibody, also called immunoglobulin, a protective protein produced by the immune system in response to the presence of a foreign substance, called an antigen. Antibodies recognize and latch onto antigens in order to remove them from the body.Each antibody consists of four polypeptides– two heavy chains and two light chains joined to form a "Y" shaped molecule. This variable region, composed of 110-130 amino acids, give the antibody its specificity for binding antigen.
By 1959 Gerald Edelman and Rodney Porter independently published the molecular structure of antibodies (10, 11), for which they were later jointly awarded the Nobel Prize in 1972.