Question

Draw a well-labeled diagram of an antibody molecule.

Answer 1

Hint: An antibody (Ab), otherwise called immunoglobulin (Ig),[1] is a huge, Y-formed protein delivered mostly by plasma cells that are utilized by the safe framework to kill microorganisms, for example, pathogenic microbes and infections. The antibody perceives a novel particle of the microorganism, called an antigen, by means of the piece antigen-official (Fab) variable region.

Complete answer:

Antibodies are resistant framework related proteins called immunoglobulins. Every counteracting agent comprises four polypeptides–two substantial chains and two light ties joined to frame a "Y" molded atom.

The amino corrosive grouping in the tips of the "Y" changes extraordinarily among various antibodies. This variable area, made out of 110-130 amino acids, gives the immune response its particularity for restricting antigen. The variable area incorporates the finishes of the light and hefty chains. Treating the immune response with a protease can divide this area, delivering Fab or section antigen restricting that incorporates the variable finishes of a counteracting agent. The material utilized for the investigations that appeared underneath started from Fab.

The steady area decides the system used to decimate the antigen. Antibodies are separated into five significant classes, IgM, IgG, Iga, IgD, and IgE, in view of their consistent locale structure and resistant capacity.

The variable area is additionally partitioned into hypervariable (HV) and structure (FR) locales. Hypervariable districts have a high proportion of various amino acids in a given position, comparative with the most widely recognized amino corrosive in that position. Inside light and weighty chains, three hypervariable areas exist – HV 1, 2, and 3. Four FR areas that have more steady amino acids arrangements separate the HV locales.

Note:
The HV districts straightforwardly contact a part of the antigen's surface. Hence, HV districts are additionally at times alluded to as complementarity deciding areas or CDRs. The FR districts structure a beta-sheet structure which fills in as a framework to hold the HV locales in position to contact antigen.