Anti-Human IgM Magnetic Beads

Human IgM is the largest and first antibody produced by the body in response to an initial exposure to an antigen. IgM is a pentameric structure that is highly effective at activating the complement system and agglutinating pathogens. IgM plays a crucial role in the body's early immune response, as it is the first antibody to appear after infection or vaccination.IgM has a low affinity for antigens but its pentameric structure allows it to bind multiple epitopes, resulting in high avidity and efficient pathogen neutralization.IgM is also involved in the clearance of apoptotic cells and cancer cells through its ability to bind the apoptosis inhibitor of macrophage (AIM) protein.Deficiencies or abnormalities in IgM production have been linked to various diseases, including immunodeficiencies, autoimmune disorders, and infectious diseases.For example, low levels of IgM have been associated with increased susceptibility to infections, while elevated IgM levels can indicate ongoing or recent infection. Understanding the structure and functions of IgM continues to provide insights into its role in health and disease. Protein function: Constant region of immunoglobulin heavy chains. Immunoglobulins, also known as antibodies, are membrane-bound or secreted glycoproteins produced by B lymphocytes. In the recognition phase of humoral immunity, the membrane-bound immunoglobulins serve as receptors which, upon binding of a specific antigen, trigger the clonal expansion and differentiation of B lymphocytes into immunoglobulins- secreting plasma cells. Secreted immunoglobulins mediate the effector phase of humoral immunity, which results in the elimination of bound antigens (PubMed:22158414, PubMed:20176268). The antigen binding site is formed by the variable domain of one heavy chain, together with that of its associated light chain. Thus, each immunoglobulin has two antigen binding sites with remarkable affinity for a particular antigen. The variable domains are assembled by a process called V-(D)-J rearrangement and can then be subjected to somatic hypermutations which, after exposure to antigen and selection, allow affinity maturation for a particular antigen (PubMed:17576170, PubMed:20176268). IgM antibodies play an important role in primary defense mechanisms. They have been shown to be involved in early recognition of external invaders like bacteria and viruses, cellular waste and modified self, as well as in recognition and elimination of precancerous and cancerous lesions. The membrane-bound form is found in the majority of normal B- cells alongside with IgD. Membrane-bound IgM induces the phosphorylation of CD79A and CD79B by the Src family of protein tyrosine kinases. It may cause death of cells by apoptosis. It is also found in soluble form, which represents about 30% of the total serum immunoglobulins where it is found almost exclusively as a homopentamer. After the antigen binds to the B-cell receptor, the secreted form is secreted in large amounts (PubMed:3137579, PubMed:16895553). [The UniProt Consortium]