CHP2 (calcineurin B homologous protein 2), also known as hepatocellular carcinoma-associated antigen 520, is a 196 amino acid protein that contains 4 EF-hand domains and plays a potential role in transmembrane Na+/H+ exchange. By binding to and activating NHE-1, CHP2 increases the pH and works to protect cells from serum deprivation-induced death. Though not typically detected in normal tissues, CHP2 is highly expressed in malignantly transformed cells and is therefore considered to be a tumor-associated antigen. Ectopic expression of CHP2 promotes proliferation of HEK293 cells and knockdown of CHP2 mRNA in HepG2 cells inhibits cell proliferation. Like calcineurin B, CHP2 can bind to and stimulate phosphatase activity of calcineurin A and activate the calcineurin/NFAT signaling pathway.
Formulation
1 mg/ml in 1X PBS; BSA free, sodium azide free
Host
Mouse
Immunogen Region
Recombinant human full-length protein was used as the immunogen for the CHP2 antibody.
Isotype
Mouse IgG2c, kappa
Species Reactivity
Human
Note
Optimal dilution of the antibody should be determined by the researcher.
Format
Purified
Purity
Protein G affinity chromatography
Storage
Store the CHP2 antibody at 2-8oC (with azide) or aliquot and store at -20oC or colder (without azide).