A9794

Sigma-Aldrich

Anti-Human IgM (μ-chain specific)−Alkaline Phosphatase antibody produced in goat

affinity isolated antibody, buffered aqueous solution

MDL number:
NACRES:
NA.46

Quality Level

biological source

goat

antibody form

affinity isolated antibody

antibody product type

secondary antibodies

clone

polyclonal

form

buffered aqueous solution

application(s)

direct ELISA: 1:50,000
dot blot: 1:60,000
immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:200
western blot (chemiluminescent): 1:60,000

conjugate

alkaline phosphatase conjugate

shipped in

wet ice

storage temp.

2-8°C

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General description

There are five immunoglobulin classes in humans. Out of these, immunoglobulin M (IgM ) is a high molecular weight protein that has five or six subunits. IgM monomers are made of two heavy chains and two light chains connected by a disulfide bond. Human serum shows low concentration of IgM monomers. It has a high carbohydrate content of about 12%. It is the first immunoglobulin produced by neonates.

Specificity

Goat polyclonal anti-Human IgM (μ-chain specific)-Alkaline Phosphatase antibody is specific for human IgM when tested against human IgA, IgG, IgM, Bence Jones kappa, and lambda myeloma proteins. The conjugate shows no reactivity with mouse or rat IgG.

Application

IgM is a glycoprotein with 5 n-linked glycosylation sites on the heavy chain. An ELISA assay was performed to identify glycosylated forms of IgM that bind to lectin. Alkaline phosphatase conjugated goat anti-human IgM was used as the secondary at 1:2000 and developed using p-nitrophenyl substrate (Sigma).

Biochem/physiol Actions

Immunoglobulin M (IgM) acts as an antigen specific part of the B cell antigen receptor on the surface of B lymphocytes that are not stimulated, in its monomeric form. Polymeric IgM molecules also serve as important activators of the classical complement cascade. IgM is essential in agglutination and cytolytic reactions.
Immunoglobulin M (IgM) antibodies appear early in the course of infections. IgM antibodies are responsible for agglutination of red blood cells in mis-matched blood transfusions. The level of IgM may vary with the status of disease or infection. Alkaline Phosphatase is an enzyme that catalyzes the conversion of chromogenic substrates such as p-nitrophenylphosphate (PNPP); chemiluminescent substrates such as CDP-Star® and fluorogenic substrates such as 4-methylumbelliferyl phosphate (4-MUP) into detectable chromophores, light-emitters or fluorescers, respectively.

Other Notes

No cross-reaction with mouse and rat IgG

Physical form

Solution in 0.05 M Tris, pH 8.0, containing 1% bovine serum albumin, 1 mM MgCl2 and 15 mM sodium azide

Legal Information

CDP-Star is a registered trademark of Tropix, Inc.

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.

storage_class_code

12 - Non Combustible Liquids

WGK Germany

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

The Immunoglobulins: Structure and Function (1998)
Krista G Haanstra et al.
Journal of immunology (Baltimore, Md. : 1950), 190(5), 1961-1973 (2013-02-01)
The immune system is characterized by the preferential migration of lymphocytes through specific tissues (i.e., tissue tropism). Tissue tropism is mediated, in part, by the α(4) integrins expressed by T lymphocytes. The α(4)β(1) integrin mediates migration of memory T lymphocytes...
W Walker et al.
Clinical and experimental immunology, 101(3), 494-501 (1995-09-01)
The reported ability of SCID mice to accept xenografts of both human tumors and peripheral blood lymphocytes (PBL) provides the potential for the development of novel immunotherapy models in these animals. This study describes the development of a novel small...
Alex V Sokoloff et al.
Immunology, 112(2), 237-249 (2004-05-19)
Both the timely clearance of degraded endogenous structures and the presence of secreted natural immunoglobulin M (IgM) are needed to avoid autoimmunity. These requirements may be causally related provided that natural IgM preferentially reacts with degraded antigens and, by activating...
Krista G Haanstra et al.
PloS one, 8(8), e71549-e71549 (2013-08-27)
The overlapping epidemiology of multiple sclerosis (MS) and Epstein-Barr virus (EBV), the increased risk to develop MS after infectious mononucleosis (IM) and the localization of EBV-infected B-cells within the MS brain suggest a causal link between EBV and MS. However...

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