Immunoglobulin M (IgM) is a member of immunoglobulin family. It exists as a pentamer in the serum and has a high molecular weight. Monomeric IgM has a molecular weight of 190 kDa. The pentameric IgM is characterized with ten μ heavy chains, ten light chains and a single J-chain which is linked by disulphide bonds. The μ chain consists of five domains- VH, Cμ1, Cμ2, Cμ3 and Cμ4. Limited digestion using papain cleaves the antibody into three fragments, two of which are identical and contain the antigen-binding activity. They are known as fragment antigen binding (Fab) fragments. The third fragment does not possess antigen-binding activity and is known as fragment crystallizable (Fc). It interacts with cells and effector molecules. The heavy chains of IgM contain an extra C domain that replaces the hinge region. IgM is the first antibody to be produced during an immune response and is the major isotype secreted in T-cell independent immune responses.
The antibody CH2 reacts with Fc fragment of human IgM.
Immunogen
Purified human IgM
Application
The reagent is designed for Flow Cytometry analysis. Suggested working dilution for Flow Cytometry is 1 μg/mL of sample. Indicated dilution is recommended starting point for use of this product. Working concentrations should be determined by the investigator.
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Physical form
Solution in Tris buffered saline, pH 8.0, with 15 mM sodium azide.
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Structural variation in immunoglobulin constant regions
Immunobiology: The Immune System in Health and Disease (2001)
The structure of a typical antibody molecule
Immunobiology: The Immune System in Health and Disease (2001)
Serum Immunoglobulin M Concentration Is Positively Related to Metabolic Syndrome in an Adult Population: Tianjin Chronic Low-Grade Systemic Inflammation and Health (TCLSIH) Cohort Study
Kun Song
PLoS ONE, 9(2), e88701-e88701 (2014)
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