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| Description | |
|---|---|
| Catalogue Number | 04-1530-25UG |
| Description | Anti-MDM2 Antibody, clone 3G9 (mouse monoclonal) |
| Alternate Names |
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| Background Information | MDM2 is over-expressed in many tumors. Its principal function is the ubiquitination and degradation of p53 tumor suppressor protein. This monoclonal antibody also recognizes a peptide epitope around Thr-216 of murine MDM2 when Thr-216 is unphosphorylated. SMP14 also cross reacts with some cytokeratins (6, 14 & 16). This is only a problem when working with certain epithelial cells and not fibroblasts. |
| Product Information | |
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| Format | Purified |
| Control |
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| Presentation | Purified mouse monoclonal IgG in buffer containing 0.1 M Tris-Glycine (pH 7.4, 150 mM NaCl) with 0.05% sodium azide. |
| Quality Level | MQ100 |
| Applications | |
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| Application | Anti-MDM2 Antibody, clone 3G9 is a Mouse Monoclonal Antibody for detection of MDM2 also known as Double minute 2 protein or Mdm2 p53 binding protein homolog & has been validated in WB, IP, ICC & IHC. |
| Key Applications |
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| Application Notes | Immunoprecipitation Analysis: A representative lot was used by an independent laboratory for this application. (Changgong, L., et al. (2002). Molecular and Cellular Biology. 22(21):7562-7571.) |
| Biological Information | |
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| Immunogen | His-tagged recombinant protein corresponding to human MDM2. |
| Epitope | Unknown |
| Clone | 3G9 |
| Concentration | Please refer to lot specific datasheet. |
| Host | Mouse |
| Specificity | This antibody recognizes MDM2. |
| Species Reactivity |
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| Species Reactivity Note | Demonstrated to react with human. Predicted to react with mouse based on 100% sequence homology. |
| Antibody Type | Monoclonal Antibody |
| Entrez Gene Number |
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| Entrez Gene Summary | This gene is a target gene of the transcription factor tumor protein p53. The encoded protein is a nuclear phosphoprotein that binds and inhibits transactivation by tumor protein p53, as part of an autoregulatory negative feedback loop. Overexpression of this gene can result in excessive inactivation of tumor protein p53, diminishing its tumor suppressor function. This protein has E3 ubiquitin ligase activity, which targets tumor protein p53 for proteasomal degradation. This protein also affects the cell cycle, apoptosis, and tumorigenesis through interactions with other proteins, including retinoblastoma 1 and ribosomal protein L5. More than 40 different alternatively spliced transcript variants have been isolated from both tumor and normal tissues. [provided by RefSeq]. |
| Gene Symbol |
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| Purification Method | Protein G Purified |
| UniProt Number |
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| UniProt Summary | FUNCTION: Inhibits TP53/p53- and TP73/p73-mediated cell cycle arrest and apoptosis by binding its transcriptional activation domain. Functions as a ubiquitin ligase E3, in the presence of E1 and E2, toward p53 and itself. Permits the nuclear export of p53 and targets it for proteasome-mediated proteolysis. SIZE: 491 amino acids; 55233 Da SUBUNIT: Binds p53, p73, ARF(P14), ribosomal protein L5 and specifically to RNA. Can interact also with retinoblastoma protein (RB), E1A-associated protein EP300 and the E2F1 transcription factor. Forms a ternary complex with p53 and WWOX. Interacts with USP7 and TBRG1. Isoform Mdm2-F does not interact with TP53/p53. Interacts with, and ubiquitinates HIV-1 Tat. SUBCELLULAR LOCATION: Nucleus, nucleoplasm. Cytoplasm. Nucleus, nucleolus. Note=Expressed predominantly in the nucleoplasm. Interaction with ARF(P14) results in the localization of both proteins to the nucleolus. The nucleolar localization signals in both ARF(P14) and MDM2 may be necessary to allow efficient nucleolar localization of both proteins. TISSUE SPECIFICITY: Ubiquitous. Isoform Mdm2-A, isoform Mdm2-B, isoform Mdm2-C, isoform Mdm2-D, isoform Mdm2-E, isoform Mdm2-F and isoform Mdm2-G are observed in a range of cancers but absent in normal tissues. DOMAIN: Region I is sufficient for binding p53 and inhibiting its G1 arrest and apoptosis functions. It also binds p73 and E2F1. Region II contains most of a central acidic region required for interaction with ribosomal protein L5 and a putative C4-type zinc finger. The RING finger domain which coordinates two molecules of zinc interacts specifically with RNA whether or not zinc is present and mediates the hetero-oligomerization with MDM4. It is also essential for its ubiquitin ligase E3 activity toward p53 and itself. PTM: Phosphorylated in response to ionizing radiation in an ATM- dependent manner. DISEASE: Seems to be amplified in certain tumors (including soft tissue sarcomas, osteosarcomas and gliomas). A higher frequency of splice variants lacking p53 binding domain sequences was found in late-stage and high-grade ovarian and bladder carcinomas. Four of the splice variants show loss of p53 binding. SIMILARITY: Belongs to the MDM2/MDM4 family. & Contains 1 RanBP2-type zinc finger. & Contains 1 RING-type zinc finger. & Contains 1 SWIB domain. MISCELLANEOUS: MDM2 RING finger mutations that failed to ubiquitinate p53 in vitro did not target p53 for degradation when expressed in cells. |
| Molecular Weight | ~ 75 kDa |
| Product Usage Statements | |
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| Quality Assurance | Evaluated by Western Blot in MCF-7 cell lysate. Western Blot Analysis: 0.5 µg/ml of this antibody detected MDM2 on 10 µg of MCF-7 cell lysate. |
| Usage Statement |
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| Storage and Shipping Information | |
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| Storage Conditions | Stable for 1 year at 2-8°C from date of receipt. |
| Packaging Information | |
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| Material Size | 25 µL |