Mouse Monoclonal MDM2 antibody. Suitable for ICC/IF, ICC, Flow Cyt, WB, IHC-P and reacts with Human samples. Cited in 114 publications. Immunogen corresponding to Full Length Protein corresponding to Human MDM2 aa 250-350.
pH: 7.4
Preservative: 0.05% Sodium azide
Constituents: Tris glycine, 0.88% Sodium chloride
ICC/IF | ICC | Flow Cyt | WB | IHC-P | |
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Species Human | Dilution info - | Notes ab170191 - Mouse monoclonal IgG2a, is suitable for use as an isotype control with this antibody. |
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E3 ubiquitin-protein ligase that mediates ubiquitination of p53/TP53, leading to its degradation by the proteasome (PubMed:29681526). Inhibits p53/TP53- and p73/TP73-mediated cell cycle arrest and apoptosis by binding its transcriptional activation domain. Also acts as a ubiquitin ligase E3 toward itself and ARRB1. Permits the nuclear export of p53/TP53. Promotes proteasome-dependent ubiquitin-independent degradation of retinoblastoma RB1 protein. Inhibits DAXX-mediated apoptosis by inducing its ubiquitination and degradation. Component of the TRIM28/KAP1-MDM2-p53/TP53 complex involved in stabilizing p53/TP53. Also a component of the TRIM28/KAP1-ERBB4-MDM2 complex which links growth factor and DNA damage response pathways. Mediates ubiquitination and subsequent proteasome degradation of DYRK2 in nucleus. Ubiquitinates IGF1R and SNAI1 and promotes them to proteasomal degradation (PubMed:12821780, PubMed:15053880, PubMed:15195100, PubMed:15632057, PubMed:16337594, PubMed:17290220, PubMed:19098711, PubMed:19219073, PubMed:19837670, PubMed:19965871, PubMed:20173098, PubMed:20385133, PubMed:20858735, PubMed:22128911). Ubiquitinates DCX, leading to DCX degradation and reduction of the dendritic spine density of olfactory bulb granule cells (By similarity). Ubiquitinates DLG4, leading to proteasomal degradation of DLG4 which is required for AMPA receptor endocytosis (By similarity). Negatively regulates NDUFS1, leading to decreased mitochondrial respiration, marked oxidative stress, and commitment to the mitochondrial pathway of apoptosis (PubMed:30879903). Binds NDUFS1 leading to its cytosolic retention rather than mitochondrial localization resulting in decreased supercomplex assembly (interactions between complex I and complex III), decreased complex I activity, ROS production, and apoptosis (PubMed:30879903).
E3 ubiquitin-protein ligase Mdm2, Double minute 2 protein, Oncoprotein Mdm2, RING-type E3 ubiquitin transferase Mdm2, p53-binding protein Mdm2, Hdm2, MDM2
Mouse Monoclonal MDM2 antibody. Suitable for ICC/IF, ICC, Flow Cyt, WB, IHC-P and reacts with Human samples. Cited in 114 publications. Immunogen corresponding to Full Length Protein corresponding to Human MDM2 aa 250-350.
pH: 7.4
Preservative: 0.05% Sodium azide
Constituents: Tris glycine, 0.88% Sodium chloride
Recognizes the ~90 kDa (apparent MW) MDM2 protein in A549 cells.
Purified from TCS.
This product was changed from ascites to tissue culture supernatant on 17 May 2019. Please note that the dilutions may need to be adjusted accordingly. If you have any questions, please do not hesitate to contact our scientific support team.
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MDM2 also known as murine double minute 2 is an important regulator of the p53 tumor suppressor protein. It functions as an E3 ubiquitin ligase targeting p53 for proteasomal degradation. The MDM2 protein has a molecular weight of approximately 55 kDa. It is expressed in various human tissues with higher levels in rapidly dividing cells. MDM2 interacts through its N-terminal domain with the transactivation domain of p53 inhibiting its transcriptional activity.
The MDM2 protein plays a central role in cell cycle control and apoptosis regulation. It forms a complex with p53 which modulates p53's stability and activity. By binding to p53 MDM2 prevents p53 from inducing cell cycle arrest or apoptosis in response to DNA damage or oncogenic signals. Its interaction allows cells to proliferate even in the presence of potential growth-arrest signals maintaining homeostasis under normal physiological conditions.
MDM2 and p53 form a critical axis within the DNA damage response and tumorigenesis pathways. The p53-MDM2 feedback loop is a well-studied mechanism that balances cell survival and death. When DNA damage occurs p53 gets activated and in turn upregulates MDM2 expression creating a feedback loop. Other proteins like ARF also interact with MDM2 inhibiting its activity towards p53 and thereby enhancing p53 function during cellular stress.
Mutations or overexpression of the MDM2 protein are often associated with various cancers including sarcoma and breast cancer. In these cancers MDM2 amplification leads to enhanced degradation of p53 resulting in unchecked cell proliferation. MDM2's involvement in these pathologies highlights its potential as a therapeutic target with inhibitors like Nutlin-3 being developed to disrupt the MDM2-p53 interaction. The relationship between MDM2 and other proteins such as HDM201 in the context of p53 alterations further highlights its importance in cancer biology.
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This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of ameloblastoma tissue sections labeling MDM2 with ab16895. The sections were de-paraffinized, hydrated and then rinsed in phosphate-buffered solution (PBS). They were immersed in heat-induced epitope retrieval citrate buffer of concentration 15mMol and pH 6.0, diluted 1/10 with distilled water and incubated at 95°C for 10 minutes. They were then placed in fresh citrate, cooled in water for 20 minutes and then rinsed in PBS for 6 minutes. Peroxidase blocking reagent was added to each section for 5 minutes, and the sections were rinsed in 0.1% PBS for 6 minutes. The specimen were incubated for 30 minutes with 1/100 dilution of Anti-MDM2 antibody [2A10] (ab16895), then rinsed with PBS, followed by incubation with undiluted HRP for 20 minutes. 1ml of diaminobenzidine solution was added to cover the specimen, followed by incubation in a humidity chamber for 15 minutes. The sections were then immersed in aqueous haematoxylin and rinsed in distilled water for 5 minutes. The tissue was dehydrated and subsequently rinsed with xylene. Distyrene plasticizer in xylene mounting fluid was then applied, and a cover slip placed. Hematoxylin and eosin staining.
This image was generated using the ascites version of the product.
ab16895 (1/200) staining MDM2 in assynchronous HeLa cells (green). Cells were fixed with paraformaldehyde, permeabilized with 0.5% Triton X100 and counterstained with DAPI in order to highlight the nucleus (red). Please refer to Abreview for further experimental details.
This image was generated using the ascites version of the product.
Overlay histogram showing HeLa cells stained with ab16895 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum (Normal Goat Serum ab7481) / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab16895, 0.5μg/1x106 cells) for 30 min at 22°C. The secondary antibody used was DyLight® 488 goat anti-mouse IgG (H+L) (Goat Anti-Mouse IgG H&L (DyLight® 488) preadsorbed ab96879) at 1/500 dilution for 30 min at 22°C. Isotype control antibody (black line) was mouse IgG2a [ICIGG2A] (Mouse IgG2a, Kappa Monoclonal [B12/8] - Isotype Control ab91361, 1μg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.
This image was generated using the ascites version of the product.
Detection: chemiluminescence.
This image was generated using the ascites version of the product.
All lanes: Western blot - Anti-MDM2 antibody [2A10] (ab16895) at 2 µg/mL
All lanes: A549 whole cell lysate
Predicted band size: 55 kDa
This image was generated using the ascites version of the product.
All lanes: Western blot - Anti-MDM2 antibody [2A10] (ab16895) at 1/1000 dilution
All lanes: Mouse Liver lysate at 40 µg with Milk, 2 hours at 25°C
All lanes: Donkey anti-mouse IgG (HRP) at 1/10000 dilution
Performed under reducing conditions.
Predicted band size: 55 kDa
Observed band size: 55 kDa
Exposure time: 1min
ab16895 staining Human normal tonsil. Staining is localised to nuclear + cytoplasmic compartments. Left panel: with primary antibody at 1 ug/ml. Right panel: isotype control.
Sections were stained using an automated system DAKO Autostainer Plus, at RT: sections were rehydrated and antigen retrieved with the Dako 3 in 1 AR buffers citrate pH6.1 in a DAKO PT Link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 min. They were then blocked with Dako Protein block for 10 min (containing casein 0.25% in PBS) , incubated with primary antibody for 20 min and detected with Dako envision flex amplification kit for 30 min. Colorimetric detection was completed with DAB for 5 min. Slides were counterstained with Haematoxylin and coverslipped under DePeX.
This image was generated using the ascites version of the product.
ab16895 staining MDM2 in MCF7 cells treated with progesterone (Progesterone, Endogenous progesterone receptor agonist ab141252), by ICC/IF. Decrease in MDM2 expression correlates with increased concentration of progesterone, as described in literature.
The cells were incubated at 37°C for 24 hour in media containing different concentrations of Progesterone, Endogenous progesterone receptor agonist ab141252 (progesterone) in DMSO, fixed with 4% formaldehyde for 10 minutes at room temperature and blocked with PBS containing 10% goat serum, 0.3 M glycine, 1% BSA and 0.1% tween for 2h at room temperature. Staining of the treated cells with ab16895 (5 μg/ml) was performed overnight at 4°C in PBS containing 1% BSA and 0.1% tween. A DyLight 488 anti-mouse polyclonal antibody (Goat Anti-Mouse IgG H&L (DyLight® 488) preadsorbed ab96879) at 1/250 dilution was used as the secondary antibody. Nuclei were counterstained with DAPI and are shown in blue.
This image was generated using the ascites version of the product.
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