Anti-Human IgG(CH1 Fragment specific), AlpSdAbs® VHH(Biotin)

Details and Advantages

                                                Applications:
                                                WB,ELISA,IP,Purification,BLI,SPR
                                            
                                                Reactivity:
                                                Human IgG CH1 Fragment
                                            
                                                Conjugate:
                                                Biotin
                                            
                                                Advantages:
                                                High lot-to-lot consistency
Increased sensitivity and higher affinity
Animal-free production

Summary >

Description:
Anti-Human IgG(CH1 Fragment specific), AlpSdAbs® VHH(Biotin) is designed for detecting human IgG CH1 fragment specifically. Anti-Human IgG(CH1 Fragment specific), AlpSdAbs® VHH(Biotin) is based on monovalent, recombinant single domain antibody to human IgG CH1 fragment coupled to Biotin. Based on immunoelectrophoresis and/or ELISA, Anti-Human IgG(CH1 Fragment specific), AlpSdAbs® VHH(Biotin) reacts with human IgG CH1 fragment selectively, no reactivity with rabbit, mouse, rat, goat IgG.

Immunogen: Human IgG
Host: Alpaca pacous
Isotype: VHH domain of alpaca IgG2b/2c
Conjugate: Biotin
Specificity: Human IgG CH1 fragment
Cross-Reactivity: Cross-react with cynomolgus IgG, No cross-reactivity with rabbit, mouse, rat, goat IgG
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)

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. IgG is the most abundant antibody in normal human serum, accounting for 70-85% of the total immunoglobulin pool. Human IgG consists of four human subclasses (IgG1, IgG2, IgG3 and IgG4), and each contains a different heavy chain. The whole IgG molecule possesses both the Fc region and the Fab region, which possessing the epitope-recognition site. The IgG contains two heavy and light chains(kappa or lambda). The heavy chain is about 50 KD and the light chain is about 25 KD. The heavy chain chains consist of a variable domain, VH, and three constant domains CH1, CH2, and CH3. The common IgG is monomeric with a molecular weight of approximately 150 kD.
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
WB: 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.