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Immunoglobulin M (IgM) is the largest of several isotypes of antibodies (also known as immunoglobulin) that are produced by vertebrates.IgM is the first antibody to appear in the response to initial exposure to an antigen; [1] [2] causing it to also be called an acute phase antibody.
The Joining (J) chain is a protein component that links monomers of antibodies IgM and IgA to form polymeric antibodies capable of secretion. [5] The J chain is well conserved in the animal kingdom, but its specific functions are yet to be fully understood. It is a 137 residue polypeptide, [6] encoded by the IGJ gene. [7] [8] [9]
As a flow-cytometry-based application, tetramers are also easy to use and have a short assay time, similar to Antibody-based flow cytometry studies. [4] MHC tetramers are used in studies of pathogen immunity and vaccine development, in evaluation of antitumor responses, in allergy monitoring and desensitization studies, and in autoimmunity.
A pentamer is an entity composed of five subunits. In chemistry, it applies to molecules made of five monomers . In biochemistry, it applies to macromolecules, particularly pentameric proteins , made of five protein sub-units.
Five sub-units come together to form a channel. Each channel consist of two alpha chain, one beta, one gamma and one delta chain.These five chains assemble together (along with certain receptors like protons or acetylcholine) forming the structure of the channel. [1]
Immunoglobulin therapy is the use of a mixture of antibodies (normal human immunoglobulin) to treat several health conditions. [13] [14] These conditions include primary immunodeficiency, immune thrombocytopenic purpura, chronic inflammatory demyelinating polyneuropathy, Kawasaki disease, certain cases of HIV/AIDS and measles, Guillain–Barré syndrome, and certain other infections when a ...
This list of over 500 monoclonal antibodies includes approved and investigational drugs as well as drugs that have been withdrawn from market; consequently, the column Use does not necessarily indicate clinical usage. See the list of FDA-approved therapeutic monoclonal antibodies in the monoclonal antibody therapy page.
The resulting antibodies are designated IgW (also called IgX or IgNARC) and IgNAR (immunoglobulin new antigen receptor). [ 13 ] [ 14 ] The latter type is a heavy-chain antibody , an antibody lacking light chains, and can be used to produce single-domain antibodies , which are essentially the variable domain (V NAR ) of an IgNAR.