Anti-ASPP1 (RABBIT) Antibody
ASPP1 Antibody
- SPECIFICATION
- CITATIONS
- PROTOCOLS
- BACKGROUND
Host | Rabbit |
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Conjugate | Unconjugated |
Target Species | Human |
Reactivity | Human |
Clonality | Polyclonal |
Application ![]()
| WB, E, I, LCI |
Application Note | This affinity purified antibody has been tested for use in ELISA and western blotting. Specific conditions for reactivity should be optimized by the end user. Expect a band approximately 120 kDa in size corresponding to ASPP1 by western blotting in the appropriate cell lysate or extract. |
Physical State | Liquid (sterile filtered) |
Buffer | 0.02 M Potassium Phosphate, 0.15 M Sodium Chloride, pH 7.2 |
Immunogen | This affinity purified antibody was prepared from whole rabbit serum produced by repeated immunizations with a synthetic peptide corresponding to an internal sequence of human ASPP1. |
Preservative | 0.01% (w/v) Sodium Azide |
Gene ID | 23368 |
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Other Names | 23368 |
Purity | This affinity purified antibody is directed against human ASPP1. The product was affinity purified from monospecific antiserum by immunoaffinity chromatography. Minimal reactivity occurs against ASPP2. A BLAST analysis was used to suggest cross-reactivity with ASPP1 from mouse based on a 92% homology with the immunizing sequence. Reactivity against homologues from other sources is not known. |
Storage Condition | Store vial at -20° C prior to opening. Aliquot contents and freeze at -20° C or below for extended storage. Avoid cycles of freezing and thawing. Centrifuge product if not completely clear after standing at room temperature. This product is stable for several weeks at 4° C as an undiluted liquid. Dilute only prior to immediate use. |
Precautions Note | This product is for research use only and is not intended for therapeutic or diagnostic applications. |
Name | PPP1R13B |
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Synonyms | ASPP1, KIAA0771 |
Function | Regulator that plays a central role in regulation of apoptosis via its interaction with p53/TP53 (PubMed:11684014, PubMed:12524540). Regulates TP53 by enhancing the DNA binding and transactivation function of TP53 on the promoters of proapoptotic genes in vivo. |
Cellular Location | Cytoplasm. Nucleus. Note=Predominantly cytoplasmic. Some fraction is nuclear |
Tissue Location | Reduced expression in breast carcinomas expressing a wild-type TP53 protein. |

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Provided below are standard protocols that you may find useful for product applications.
Background
ASPP (ankyrin-repeat-, SH3-domain- proline-rich-region protein) proteins (ASPP1, ASPP2 and iASPP) represent a new family of p53 binding proteins. ASPP1 and ASPP2 bind and enhance p53-mediated apoptosis. In contrast, iASPP functionally inactivates p53. ASPPs may also regulate p63- and p73-mediated apoptosis. Both ASPP1 and 2 directly interact with p53 and specifically enhance the apoptotic function of p53 by stimulating its DNA binding and transactivation function on promoters of pro-apoptotic genes, such as Bax and PIG-3. Not all cell cycle arrest genes are affected, such as p21. Interestingly, expression of ASPP is frequently down-regulated in human breast carcinomas expressing wild-type p53 but not mutant p53. Therefore, ASPP might regulate the tumor suppression function of p53 in vivo.

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