ASPP proteins (ASPP1, ASPP2 and iASPP) represent a new family of p53 binding proteins. ASPP1 and ASPP2 bind and enhance p53-mediated apoptosis. In contrast, the third member, iASPP, functionally inactivates p53. iASPP (also called protein phosphatase 1 regulatory (inhibitor) subunit 13 like protein, Inhibitor of ASPP protein, Protein iASPP, PPP1R13B-like protein and NFkB-interacting protein 1) plays a central role in regulation of apoptosis and transcription via its interaction with NF-kappa-B and p53/TP53 proteins. iASPP blocks transcription of HIV-1 virus by inhibiting the action of both NF-kappa-B and SP1. This protein also inhibits p53/TP53 function, possibly by preventing the association between p53/TP53 and ASPP1 or ASPP2, and therefore suppressing the subsequent activation of apoptosis. iASPP is predominantly a cytoplasmic protein (isoform 1) but can also be found in the nucleus (isoform 2). iASPP is highly expressed in heart, placenta and prostate and is weakly expressed in brain, liver, skeletal muscle, testis and peripheral blood leukocyte. The N-terminal region of isoform 1 is required for cytoplasmic localization. Defects in iASPP may be a cause of certain breast cancers and the protein is overexpressed in many patients suffering from breast carcinomas and expressing a wild-type p53/TP53 protein.
Immunogen
Amino acids 780-797 of human iASPP (isoform 1) protein.
Key Feature
Clonality
Polyclonal
Host Species
Rabbit
Tested Applications
IFIHCWB
PPP1R13L antibody can be used in Western Blot starting at 1 - 3 μg/mL, immunohistochemistry starting at 5 μg/mL, and flow cytometry.
PPP1R13L IASPP Inhibitor of ASPP protein NFkB-interacting protein 1 NKIP1 RAI4 RAI Retinoic acid induced 4 NFkB interacting protein 1 PPP1R13BL Protein iASPP RelA-associated inhibitor PPP1R13B-like protein
Immunohistochemistry staining of PPP1R13L in liver tissue using PPP1R13L Antibody.
Application Notes
PPP1R13L antibody can be used in Western Blot starting at 1 - 3 μg/mL, immunohistochemistry starting at 5 μg/mL, and flow cytometry.
Additional Information
Form
Liquid
Storage Instructions
Store PPP1R13L antibody at -20 ˚C prior to opening. Dilute only prior to immediate use. For extended storage aliquot contents and freeze at -20 ˚C or below. As with all antibodies avoid freeze/thaw cycles.
Storage Buffer
0.02 M potassium phosphate, 0.15 M sodium chloride, pH 7.2, 0.01% sodium azide.