Immunoglobulin G (IgG) are antibody molecules. Each IgG is composed of four peptide chains-two heavy chains and two light chains. Each IgG has two antigen binding sites. Other Immunoglobulins may be described in terms of polymers with the IgG structure considered the monomer. IgG constitutes 75% of serum immunoglobulins in humans. IgG molecules are synthesized and secreted by plasma B cells. There are 4 IgG isotypes, IgG1, IgG2, IgG3 and IgG4. IgG2 makes up 23% of total IgG.
Applications
Suitable for use in FLISA, Western Blot and Affinity Chromatography. Other applications not tested.
Recommended Dilutions
Optimal dilutions to be determined by the researcher.
Storage and Stability
Store product at 4°C if to be used immediately within two weeks. For long-term storage, aliquot to avoid repeated freezing and thawing and store at -20°C. Aliquots are stable at -20°C for 12 months after receipt. Dilute required amount only prior to immediate use. Further dilutions can be made in assay buffer. Caution: FITC conjugates are sensitive to light. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Note: Applications are based on unconjugated antibody.
Immunogen
Human IgG2 (Fc portion).
Form
Supplied as a liquid in PBS, pH 7.2. No preservative added. Labeled with Fluorescein isothiocyanate (FITC).
Purity
Purified by Protein A affinity chromatography.
Specificity
Recognizes human IgG2 (kappa and Lambda light chain). No crossreactivty was found against IgG1, IgG3, IgG4, IgM, IgA and IgD.