Immunogen | His-taggedrecombinantproteincorrespondingtohumanMDM2. |
Epitope | Unknown |
Clone | 3G9 |
Concentration | PleaserefertotheCertificateofAnalysisforthelot-specificconcentration. |
Host | Mouse |
Specificity | ThisantibodyrecognizesMDM2. |
SpeciesReactivity | |
SpeciesReactivityNote | Demonstratedtoreactwithhuman.Predictedtoreactwithmousebasedon100%sequencehomology. |
AntibodyType | MonoclonalAntibody |
EntrezGeneNumber | |
EntrezGeneSummary | Thisgeneisatargetgeneofthetranscriptionfactortumorproteinp53.Theencodedproteinisanuclearphosphoproteinthatbindsandinhibitstransactivationbytumorproteinp53,aspartofanautoregulatorynegativefeedbackloop.Overexpressionofthisgenecanresultinexcessiveinactivationoftumorproteinp53,diminishingitstumorsuppressorfunction.ThisproteinhasE3ubiquitinligaseactivity,whichtargetstumorproteinp53forproteasomaldegradation.Thisproteinalsoaffectsthecellcycle,apoptosis,andtumOrigenesisthroughinteractionswithotherproteins,includingretinoblastoma1andribosomalproteinL5.Morethan40differentalternativelysplicedtranscriptvariantshavebeenisolatedfrombothtumorandnormaltissues.[providedbyRefSeq]. |
GeneSymbol | |
PurificationMethod | ProteinGPurified |
UniProtNumber | |
UniProtSummary | FUNCTION:InhibitsTP53/p53-andTP73/p73-mediatedcellcyclearrestandapoptosisbybindingitstranscriptionalactivationdomain.FunctionsasaubiquitinligaseE3,inthepresenceofE1andE2,towardp53anditself.Permitsthenuclearexportofp53andtargetsitforproteasome-mediatedproteolysis.
SIZE:491aminoacids;55233Da
SUBUNIT:Bindsp53,p73,ARF(P14),ribosomalproteinL5andspecificallytoRNA.Caninteractalsowithretinoblastomaprotein(RB),E1A-associatedproteinEP300andtheE2F1transcriptionfactor.Formsaternarycomplexwithp53andWWOX.InteractswithUSP7andTBRG1.IsoformMdm2-FdoesnotinteractwithTP53/p53.Interactswith,andubiquitinatesHIV-1Tat.
SUBCELLULARLOCATION:Nucleus,nucleoplasm.Cytoplasm.Nucleus,nucleolus.Note=Expressedpredominantlyinthenucleoplasm.InteractionwithARF(P14)resultsinthelocalizationofbothproteinstothenucleolus.ThenucleolarlocalizationsignalsinbothARF(P14)andMDM2maybenecessarytoallowefficientnucleolarlocalizationofbothproteins.
TISSUESPECIFICITY:Ubiquitous.IsoformMdm2-A,isoformMdm2-B,isoformMdm2-C,isoformMdm2-D,isoformMdm2-E,isoformMdm2-FandisoformMdm2-Gareobservedinarangeofcancersbutabsentinnormaltissues.
DOMAIN:RegionIissufficientforbindingp53andinhibitingitsG1arrestandapoptosisfunctions.Italsobindsp73andE2F1.RegionIIcontainsmostofacentralacidicregionrequiredforinteractionwithribosomalproteinL5andaputativeC4-typezincfinger.TheRINGfingerdomainwhichcoordinatestwomoleculesofzincinteractsspecificallywithRNAwhetherornotzincispresentandmediatesthehetero-oligomerizationwithMDM4.ItisalsoessentialforitsubiquitinligaseE3activitytowardp53anditself.
PTM:PhosphorylatedinresponsetoionizingrADIationinanATM-dependentmanner.
DISEASE:Seemstobeamplifiedincertaintumors(includingsofttissuesarcomas,osteosarcomasandgliomas).Ahigherfrequencyofsplicevariantslackingp53bindingdomainsequenceswasfoundinlate-stageandhigh-gradeovarianandbladdercarcinomas.Fourofthesplicevariantsshowlossofp53binding.
SIMILARITY:BelongstotheMDM2/MDM4family.&Contains1RanBP2-typezincfinger.&Contains1RING-typezincfinger.&Contains1SWIBdomain.
MISCELLANEOUS:MDM2RINGfingermutationsthatfailedtoubiquitinatep53invitrodidnottargetp53fordegradationwhenexpressedincells. |
MolecularWeight | ~75kDa |