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Anti-MDM2 Antibody, clone 2A10 is a Mouse Monoclonal Antibody for detection of MDM2 also known as E3 ubiquitin-protein ligase Mdm2 or Hdm2 & has been validated in WB & IP.
More>>Anti-MDM2 Antibody, clone 2A10 is a Mouse Monoclonal Antibody for detection of MDM2 also known as E3 ubiquitin-protein ligase Mdm2 or Hdm2 & has been validated in WB & IP. Less<<
Anti-MDM2 Antibody, clone 2A10: SDB (Sicherheitsdatenblätter), Analysenzertifikate und Qualitätszertifikate, Dossiers, Broschüren und andere verfügbare Dokumente.
MDM2 is an E3 ubiquitin ligase that is most widely studied for its role in regulating the p53 tumor suppressor. MDM2 antagonizes the transcriptional activity of p53 in two main ways. The N-terminal of MDM2 interacts and disables the transactivation domain of p53. In addition, the C-terminal E3 ligase region of MDM2 can attach monoubiquitin to p53 resulting in the transport of p53 from the nucleus to the cytoplasm, thereby preventing the interaction of p53 with target DNA sequences. In addition, MDM2 may also attach polyubiquitin chains to p53, resulting in the degradation of p53 by the proteosome. MDM2 may produce these effects in cooperation with the Mdmx protein. Overall, MDM2 inhibits the ability of p53 to induce cell cycle arrest or apoptosis, and may contribute to oncogenesis.
References
Product Information
Format
Purified
Control
A-549 cell lysate
Presentation
Purified mouse monoclonal IgG2aκ cultured supernatant in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
Anti-MDM2 Antibody, clone 2A10 is a Mouse Monoclonal Antibody for detection of MDM2 also known as E3 ubiquitin-protein ligase Mdm2 or Hdm2 & has been validated in WB & IP.
Key Applications
Western Blotting
Immunoprecipitation
Application Notes
Immunoprecipitation Analysis: A representative lot was used by an independent laboratory in human lymphoblastoid cell line (NL553) treated with NCS. (Khosravi, R., et al. (1999). PNAS. 96(26):14973–14977.)
Biological Information
Immunogen
Human MDM2 protein
Clone
2A10
Concentration
Please refer to the Certificate of Analysis for the lot-specific concentration.
~90 kDa observed. The calculated molecular weight is 55 kDa, however MDM2 has been shown as a ~90 kDa band in western blots (Erhardt, P., et al. (1997). The Journal of Biological Chemistry. 272:15049-15052.). Uniprot describes many isoforms between 12-56 kDa, which can be highly phosphorylated and ubiquitinated.
Physicochemical Information
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Quality Assurance
Evaluated by Western Blot in A-549 cell lysate.
Western Blot Analysis: 0.5 µg/mL of this antibody detected MDM2 on 10 µg of A-549 cell lysate.
Usage Statement
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
Rapid ATM-dependent phosphorylation of MDM2 precedes p53 accumulation in response to DNA damage. Khosravi, R, et al. Proc. Natl. Acad. Sci. U.S.A., 96: 14973-7 (1999)
1998
The p53 tumor-suppressor protein, a key regulator of cellular responses to genotoxic stress, is stabilized and activated after DNA damage. This process is associated with posttranslational modifications of p53, some of which are mediated by the ATM protein kinase. However, these modifications alone may not account in full for p53 stabilization. p53's stability and activity are negatively regulated by the oncoprotein MDM2, whose gene is activated by p53. Conceivably, p53 function may be modulated by modifications of MDM2 as well. We show here that after treatment of cells with ionizing radiation or a radiomimetic chemical, but not UV radiation, MDM2 is phosphorylated rapidly in an ATM-dependent manner. This phosphorylation is independent of p53 and the DNA-dependent protein kinase. Furthermore, MDM2 is directly phosphorylated by ATM in vitro. These findings suggest that in response to DNA strand breaks, ATM may promote p53 activity and stability by mediating simultaneous phosphorylation of both partners of the p53-MDM2 autoregulatory feedback loop.
Programmed cell death is mediated by members of the interleukin 1-beta convertase family of proteases, which are activated in response to diverse cell death stimuli. However, the key substrates of these proteases that are responsible for apoptotic cell death have not been identified. Here we report that the MDM2 oncoprotein is cleaved by members of the CPP32 subfamily of interleukin 1-beta convertase proteases both in vitro and in vivo, resulting in the disappearance of MDM2 from apoptotic cells. Because MDM2 functions as a negative regulator of the p53 tumor suppressor and because p53 induces apoptosis in response to a variety of stimuli, this cleavage of MDM2 by CPP32-like proteases may result in deregulation of p53 and contribute directly to the process of apoptotic cell death.
