Anti-IgM Affibody® Molecule (ab36088)

Overview

  • Product nameAnti-IgM Affibody® Molecule
  • SpecificityThis product binds to human IgM.
  • Tested applicationsSuitable for: ELISA, Othermore details
  • Species reactivity
    Reacts with: Human
  • General notes

    This product is a recombinant protein produced in E.coli.

    What are Affibody Molecules?
    Affibody® affinity ligands are unique research reagents, produced using innovative protein-engineering technologies. They are small, simple proteins composed of a three-helix bundle based on the scaffold of one of the IgG-binding domains of Protein A. Protein A is a surface protein from the bacterium Staphylococcus aureus. This scaffold has excellent features as an affinity ligand and can be designed to bind with high affinity to any given target protein. The domain consists of 58 amino acids, 13 of which are randomized to generate Affibody® libraries with a large number of ligand variants. Thus, the libraries consist of a multitude of protein ligands with an identical backbone and variable surface-binding properties. In function, Affibody® Molecules mimic monoclonal antibodies. Compared to antibodies, the most striking dissimilarity of Affibody® Molecules is the small size. Affibody® Molecules have a molecular weight of 14kDa, compared to the molecular weight of antibodies, which is 150kDa. In spite of its small size, the binding site of Affibody® Molecules is similar to that of an antibody. The advantages of Affibody® Molcules over antibodies are: -their small size -the simple structure of the molecules -its robust physical properties; able to withstand a broad range of analytical conditions, including extreme pH and elevated temperature -its ability to fold correctly intracellularly -the fast and cost effective production in bacteria -the potential to couple Affibody® Molecules in multimeric constructs Affibody® Molecules have highly competitive properties for applications within affinity purification, sample preparation, protein detection and in vitro diagnostics.

    This Anti-Fibrinogen Affibody® Molecule is modified with a unique C-terminal cysteine for directed single-point chemical modification, facilitating coupling to matrices. However, tail-to-tail dimers are spontaneously generated via a disulphide bridge between the C-terminal cysteines. Prior to coupling via the C-terminal the Affibody® Molecule needs to be reduced to expose the reactive cysteine residue. Recommended reducing condition is 20mM DTT at a pH above 7.5 and incubation at room temperature for 2 hours. Remove excess DTT by passage through a desalting column, not by dialysis. ab50345 is a secondary antibody suitable for use in the process of detecting this Affibody® Molecule.

    THIS AFFIBODY® MOLECULE REQUIRES CONJUGATION TO A SUITABLE LABEL BEFORE USE. PLEASE REFER TO THE "PROTOCOLS" LINK BELOW.

Properties

  • FormLiquid
  • Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Store at -20°C or -80°C. Avoid freeze / thaw cycle.
  • Storage bufferpH: 7.4
    Constituent: PBS
  • Concentration information loading...
  • Purification notesThe purity of this product is >98% as determined by SDS-PAGE and RP-HPLC analysis.
  • Affibody® molecule notesWhat are Affibody Molecules?
    Affibody® affinity ligands are unique research reagents, produced using innovative protein-engineering technologies. They are small, simple proteins composed of a three-helix bundle based on the scaffold of one of the IgG-binding domains of Protein A. Protein A is a surface protein from the bacterium Staphylococcus aureus. This scaffold has excellent features as an affinity ligand and can be designed to bind with high affinity to any given target protein. The domain consists of 58 amino acids, 13 of which are randomized to generate Affibody® libraries with a large number of ligand variants. Thus, the libraries consist of a multitude of protein ligands with an identical backbone and variable surface-binding properties. In function, Affibody® Molecules mimic monoclonal antibodies. Compared to antibodies, the most striking dissimilarity of Affibody® Molecules is the small size. Affibody® Molecules have a molecular weight of 14kDa, compared to the molecular weight of antibodies, which is 150kDa. In spite of its small size, the binding site of Affibody® Molecules is similar to that of an antibody. The advantages of Affibody® Molcules over antibodies are: -their small size -the simple structure of the molecules -its robust physical properties; able to withstand a broad range of analytical conditions, including extreme pH and elevated temperature -its ability to fold correctly intracellularly -the fast and cost effective production in bacteria -the potential to couple Affibody® Molecules in multimeric constructs Affibody® Molecules have highly competitive properties for applications within affinity purification, sample preparation, protein detection and in vitro diagnostics.
  • Research areas
  • RelevanceIgM normally constitutes about 10% of serum immunoglobulins. IgM antibody is prominent in early immune responses to most antigens and is largely confined to plasma due to it's large size. Monomeric IgM is expressed as a membrane bound antibody on the surface of B cells and as a pentamer when secreted by plasma cells. Due to it's high valency IgM is more efficient than other isotypes is binding antigens with repeating epitopes (virus particles and red blood cells) and is more efficient than IgG in activiating the complement pathway. The gene for the mu constant region contains four domains separated by short intervening sequences. IgM measurement yields information about the body's immediate resistance and response to infection as well as information related to specific diseases. Decreased levels are associated with immune deficiency states, hereditary deficiencies, and myeloma. Increased levels can be associated with Waldenstrom's macroglobulinemia, chronic infection and hepatocellular disease.
  • Cellular localizationCell Membrane and Secreted
  • Alternative names
    • Immunoglobin heavy chain constant region mu edit item name - Immunoglobin heavy chain mu constant region
    • Immunoglobin heavy chain constant region mu
    • AGM1
    • Constant region of heavy chain of IgM
    • DKFZp686I15196
    • DKFZp686I15212
    • FLJ00385
    • Ig mu chain C region
    • IGHM
    • IgM heavy chain constant region
    • Immunoglobin heavy constant mu
    • Immunoglobulin mu
    • MGC104996
    • MGC52291
    • MU
    • VH
    see all
  • Database links

Associated products

Applications

Our Abpromise guarantee covers the use of ab36088 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
AP Use at an assay dependent concentration.
ELISA Use at an assay dependent concentration.
Other Use at an assay dependent concentration.

This Anti-IgM Affibody® Molecule is an ideal affinity ligand as capture reagent in ELISA and as capture molecule in affinity chromatography.

Anti-IgM Affibody® Molecule images

  • Results quantitative ELISA

    The Anti-IgM Affibody® molecule can be used as capture reagent in a sandwich ELISA in combination with a mouse anti- IgM antibody as the detection reagent. Titration of IgM gives a sigmoid curve with a sensitivity of 2.0 ng IgM/ml (defined as two times background value).

References for Anti-IgM Affibody® Molecule (ab36088)

This product has been referenced in:

See 1 Publication for this product

Product Wall

DISCOUNT CODE: 41463
Expiration date: 18/07/2012
I am very pleased to hear you would like to accept our offer and test ab36088 in IP (mouse, rat, human). This code will give you 1 free PRIMARY ANTIBODY before the expiration date. To redeem th...

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If the customer wants to use IgM for immunoprecipitation, and for some reason wants to use Affibody® Molecules rather than Anti-Anti-IgM Antibodies, we recommend testing to use Anti-IgM Aff...

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"