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  3. MDM2

MDM2 (MDM2 proto-oncogene)

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Summary of MDM2

This gene codes for a nuclear-localized E3 ubiquitin ligase. The protein can promote tumor formation. Overexpression may cause cancer. There is a pseudogene on chromosome 2 [R]

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The Function of MDM2

E3 ubiquitin-protein ligase that mediates ubiquitination of p53/TP53, leading to its degradation by the proteasome. 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 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.

Protein names

Recommended name:

E3 ubiquitin-protein ligase Mdm2

Alternative name(s):

Double minute 2 protein
Hdm2
Oncoprotein Mdm2
p53-binding protein Mdm2

MDM2 SNPs

    To see your genotype, you should be logged in and have a file with your genotype uploaded.

  1. RS2279744 (MDM2) ??
  2. RS3730536 (MDM2) ??

Top Gene-Substance Interactions

MDM2 Interacts with These Diseases

Disease Score

Substances That Increase MDM2

Substances Interaction Organism Category

Substances That Decrease MDM2

Substances Interaction Organism Category

Advanced Summary

     From NCBI Gene: Accelerated tumor formation, susceptibility toFrom UniProt: 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.

     From NCBI Gene: This gene encodes a nuclear-localized E3 ubiquitin ligase. The encoded protein can promote tumor formation by targeting tumor suppressor proteins, such as p53, for proteasomal degradation. This gene is itself transcriptionally-regulated by p53 . Overexpression or amplification of this locus is detected in a variety of different cancers. There is a pseudogene for this gene on chromosome 2. Alternative splicing results in a multitude of transcript variants, many of which may be expressed only in tumor cells. [provided by RefSeq, Jun 2013] From UniProt: E3 ubiquitin-protein ligase that mediates ubiquitination of p53/TP53, leading to its degradation by the proteasome. 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 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.

Conditions with Increased Gene Activity

Condition Change (log2fold) Comparison Species Experimental variables Experiment name

Conditions with Decreased Gene Activity

Condition Change (log2fold) Comparison Species Experimental variables Experiment name

Technical

The following transcription factors affect gene expression:

  • ER-alpha
  • p53
  • Egr-1
  • Sp1
  • STAT1
  • STAT1beta
  • STAT1alpha
  • GATA-3
  • JunD
  • p300

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.

Gene Pathways:

  • Disease
  • Immune System
  • Melanoma
  • Pathways in cancer
  • Signal Transduction
  • Cellular responses to stress
  • Prostate cancer
  • Chronic myeloid leukemia
  • Glioma
  • p53 signaling pathway
  • Bladder cancer
  • Neuronal System
  • Ubiquitin mediated proteolysis

Induction:

By DNA damage.

Caution:

A report observed N-glycosylation at Asn-349 (PubMed:19139490). However, as the protein is not extracellular, additional evidences are required to confirm this result.

Molecular Function:

  • Enzyme Binding
  • Ligase Activity
  • P53 Binding
  • Sumo Transferase Activity
  • Ubiquitin Protein Ligase Activity
  • Ubiquitin Protein Ligase Binding
  • Ubiquitin-Protein Transferase Activity
  • Zinc Ion Binding
  • Identical Protein Binding

Biological Processes:

  • Atrial Septum Development
  • Atrioventricular Valve Morphogenesis
  • Blood Vessel Development
  • Blood Vessel Remodeling
  • Cardiac Septum Morphogenesis
  • Cellular Response To Alkaloid
  • Cellular Response To Antibiotic
  • Cellular Response To Estrogen Stimulus
  • Cellular Response To Growth Factor Stimulus
  • Cellular Response To Hydrogen Peroxide
  • Cellular Response To Hypoxia
  • Cellular Response To Peptide Hormone Stimulus
  • Cellular Response To Uv-C
  • Cellular Response To Vitamin B1
  • Dna Damage Response, Signal Transduction By P53 Class Mediator Resulting In Cell Cycle Arrest
  • Endocardial Cushion Morphogenesis
  • Establishment Of Protein Localization
  • Negative Regulation Of Cell Cycle Arrest
  • Negative Regulation Of Cysteine-Type Endopeptidase Activity Involved In Apoptotic Process
  • Negative Regulation Of Dna Damage Response, Signal Transduction By P53 Class Mediator
  • Negative Regulation Of Neuron Projection Development
  • Negative Regulation Of Protein Processing
  • Negative Regulation Of Signal Transduction By P53 Class Mediator
  • Negative Regulation Of Transcription, Dna-Templated
  • Negative Regulation Of Transcription From Rna Polymerase Ii Promoter
  • Peptidyl-Lysine Modification
  • Positive Regulation Of Cell Proliferation
  • Positive Regulation Of Gene Expression
  • Positive Regulation Of Mitotic Cell Cycle
  • Positive Regulation Of Proteasomal Ubiquitin-Dependent Protein Catabolic Process
  • Positive Regulation Of Protein Export From Nucleus
  • Positive Regulation Of Vascular Associated Smooth Muscle Cell Migration
  • Positive Regulation Of Vascular Smooth Muscle Cell Proliferation
  • Protein Autoubiquitination
  • Protein Complex Assembly
  • Protein Destabilization
  • Protein Localization To Nucleus
  • Protein Sumoylation
  • Protein Ubiquitination
  • Protein Ubiquitination Involved In Ubiquitin-Dependent Protein Catabolic Process
  • Regulation Of Heart Rate
  • Regulation Of Protein Catabolic Process
  • Regulation Of Signal Transduction By P53 Class Mediator
  • Response To Antibiotic
  • Response To Carbohydrate
  • Response To Cocaine
  • Response To Ether
  • Response To Iron Ion
  • Response To Magnesium Ion
  • Response To Morphine
  • Response To Steroid Hormone
  • Response To Toxic Substance
  • Response To Water-Immersion Restraint Stress
  • Transcription Factor Catabolic Process
  • Traversing Start Control Point Of Mitotic Cell Cycle
  • Ventricular Septum Development
  • Viral Process
*synonyms

Synonyms/Aliases/Alternative Names of the Gene:

hypothetical protein| A306_00861| ACTFS| AS27_09686| AS28_00969| cdm2| double minute 2| double minute 2 homolog| double minute 2, human homolog of; p53-binding protein| double minute 2 protein| E3 ubiquitin-protein ligase Mdm2| edm2| EGK_03911| etID309863.4| H920_13848| hdm2| HDMX| I79_002682| M91_15463| M959_07549| MDA_GLEAN10007223| Mdm-2| MDM2 alpha| MDM2-like protein| MDM2 oncogene, E3 ubiquitin protein ligase| Mdm2 p53 binding protein homolog| Mdm2, p53 E3 ubiquitin protein ligase homolog| MDM2 proto-oncogene, E3 ubiquitin protein ligase| Mdm2, transformed 3T3 cell double minute 2, p53 binding protein| murine double minute 2 homolog| N300_02586| N301_01485| N303_09507| N305_02737| N306_04370| N307_10385| N308_06307| N309_04144| N310_04040| N311_00606| N312_12234| N320_02932| N321_03757| N322_04193| N324_02472| N325_04910| N326_13227| N327_12879| N328_07240| N329_02957| N330_02537| N331_08417| N332_03272| N333_05028| N334_08585| N335_11367| N336_10551| N339_00911| N340_01018| N341_03521| oncoprotein Mdm2| p53-binding protein Mdm2| p53 E3 ubiquitin protein ligase| PAL_GLEAN10022368| PANDA_006813| transformed 3T3 cell double minute 2 homolog| transformed mouse 3T3 cell double minute 2| UY3_12674| Xdm2| Y1Q_019767| Y956_11138| Z169_14240| mdm2

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