Molecular weight (DA)
22kD
Immunogen
The antiserum was produced against synthesized peptide derived from human CHP2. AA range:101-150
Specificity
CHP2 Polyclonal Antibody detects endogenous levels of CHP2 protein.
Formulation
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Dilution rate
Western Blot: 1/500 - 1/2000. ELISA: 1/40000. Not yet tested in other applications.
Purification process (Immunogen)
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
Background
This gene product is a small calcium-binding protein that regulates cell pH by controlling plasma membrane-type Na+/H+ exchange activity. This protein shares sequence similarity with calcineurin B and can bind to and stimulate the protein phosphatase activity of calcineurin A (CnA) and functions in the calcineurin/NFAT (nuclear factor of activated T cells) signaling pathway. Another member of the CHP subfamily, Calcineurin B homologous protein 1, is located on Chromosome 15 and is an inhibitor of calcineurin activity and has a genetic phenotype associated with Parkinson's Disease (OMIM:606988). This gene was initially identified as a tumor-associated antigen and was previously referred to as Hepatocellular carcinoma-associated antigen 520. [provided by RefSeq, Jul 2013],
Function
function:Binds to and activates SLC9A1/NHE1 in a serum-independent manner, thus increasing pH and protecting cells from serum deprivation-induced death.,similarity:Contains 4 EF-hand domains.,subunit:Binds to SLC9A1/NHE1.,tissue specificity:Expressed in malignantly transformed cells but not detected in normal tissues.,
Protein name
Calcineurin B homologous protein 2
Other name
CHP2; HCA520; Calcineurin B homologous protein 2; Hepatocellular carcinoma-associated antigen 520
Human protein sequence Database
O43745
Mouse protein sequence database
Q9D869
Rat protein sequence database
Q810D1
Cellular localization
Nucleus . Cytoplasm . Cell membrane . Predominantly localized in a juxtanuclear region. Colocalizes with SLC9A3 in the juxtanuclear region and at the plasma membrane (By similarity). Exported from the nucleus to the cytoplasm through a nuclear export signal (NES) pathway. May shuttle between nucleus and cytoplasm. .
Tissue expression
Expressed in malignantly transformed cells but not detected in normal tissues.