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.
Application
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.
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.)
Quality
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.
Target description
~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.
Physical form
Format: Purified
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.
Analysis Note
Control A-549 cell lysate
Other Notes
Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Cell proliferation in all rapidly renewing mammalian tissues follows a circadian rhythm that is often disrupted in advanced-stage tumors. Epidemiologic studies have revealed a clear link between disruption of circadian rhythms and cancer development in humans. Mice lacking the circadian
The Journal of biological chemistry, 283(28), 19826-19835 (2008-05-21)
The p53 tumor suppressor protein, a critical modulator of cellular stress responses, is activated through diverse mechanisms that result in its stabilization and transcriptional activation. p53 activity is controlled by transcriptional, translational, and post-translational regulation. The major mechanisms of p53
Stalled replication forks induce p53, which is required to maintain the replication checkpoint. In contrast to the well-established mechanisms of DNA damage-activated p53, the downstream effectors and upstream regulators of p53 during replication blockade remain to be deciphered. Hydroxyurea triggered
Cellular senescence and apoptosis have evolved to restrain unwarranted proliferation of potentially tumorigenic cells. Here we show that overexpression of the E3 SUMO ligase PIASy in normal human fibroblasts recruits the p53 and Rb tumor suppressor pathways to provoke a
The p53-Mdm2 feedback loop is perceived to be critical for regulating stress-induced p53 activity and levels. However, this has never been tested in vivo. Using a genetically engineered mouse with mutated p53 response elements in the Mdm2 P2 promoter, we
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.