Anti-Human IgM, AlpSdAbs® VHH(Biotin)

Details and Advantages

                                                Applications:
                                                ELISA,IP,Purification,BLI,SPR
                                            
                                                Reactivity:
                                                Human IgM
                                            
                                                Conjugate:
                                                Biotin
                                            
                                                Advantages:
                                                High lot-to-lot consistency
Increased sensitivity and higher affinity
Animal-free production

Summary >

Description:
Anti-Human IgM, AlpSdAbs® VHH(Biotin) is designed for detecting human IgM specifically. Anti-Human IgM, AlpSdAbs® VHH(Biotin) is based on monovalent, recombinant single domain antibody to human IgM coupled to Biotin. Based on immunoelectrophoresis and/or ELISA, Anti-Human IgM, AlpSdAbs® VHH(Biotin) reacts with human IgM chain selectively, no reactivity with human IgG, IgA, IgD, IgE.

Immunogen: Human IgM
Host: Alpaca pacous
Isotype: VHH domain of alpaca IgG2b/2c
Conjugate: Biotin-SP (long spacer)
Specificity: Human IgM
Cross-Reactivity: Does not bind to human IgG, IgA, IgD, IgE
Purity: Recombinant Expression and Affinity purified
Concentration: 1mg/ml
Formation: Liquid, 10mM PBS(pH 7.5), 0.05% sucrose, 0.1% trehalose, 0.01% proclin300
Storage: Store at –20 °C(Avoid freeze / thaw cycles), Stable for 12 months at -20°C

Background:
In mammals, antibodies are classified into five main classes or isotypes–IgA, IgD, IgE, IgG and IgM. They are classed according to the heavy chain they contain – alpha, delta, epsilon, gamma or mu respectively. IgM 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. 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.
VHH are single-domain antibodies derived from the variable regions of heavy chain of Camelidae immunoglobulin. The size of VHH is extremely small(<15KDa) compared to other forms of antibody fragment, which significantly increase the permeability of VHH. Thus VHH is considered of great value for research, diagnostics and therapeutics.

Performance >

ELISA： 1:5000-1:20000
IP: 1-2ug/sample
BLI (biolayer interferometry)
SPR (surface plasmon resonance)

Dilution factors are presented in the form of a range because the optimal dilution is a function of many factors, such as antigen density, permeability, etc. The actual dilution used must be determined empirically.