Antibodies shows various mode of actions to eliminate, neutralize, and regulate immune responses. It contribute to the body's defense against pathogens and foreign substances. Antibody - Structure, Classes, Function: Each antibody molecule is essentially identical to the antigen receptor of the B cell that produced it. The basic structure of these proteins consists of two pairs of polypeptide chains (lengths of amino acids linked by peptide bonds) that form a flexible Y shape. The stem of the Y consists of one end of each of two identical heavy chains, while each arm is composed of the remaining portion of a heavy chain plus a smaller protein called the light ... Antibodies are protein molecules naturally produced or synthesized by the B-lymphocytes. They are also known as Immunoglobulins. Antibodies or immunoglobulins (Ig) are of five different isotypes. This classification is on the basis of their H chains. Let’s look at the different types of immunoglobulins and their functions. IgM IgM is the first antibody produced in response to a microbial attack by B cells. It is the largest antibody and is found in a pentameric form. It circulates in the blood and lymph and constitutes 6% of the total antibody content in the serum. It is involved in agglutination and opsonization ...
