Immunogen | ImmunogenusedwasabranchedpeptidecorrespondingtotheubiquitinationsiteonhumanH2B. |
Epitope | UbiquitylLys120 |
Clone | clone56 |
Concentration | PleaserefertotheCertificateofAnalysisforthelot-specificconcentration. |
Host | Mouse |
Specificity | RecognizeshistoneH2BwhenitisubiquitinatedatLys120butnotH2Binitsunmodifiedstate,orubiquitinunconjugatedtoH2B.Mr~25kDa. |
Isotype | IgG2aκ |
SpeciesReactivity | |
SpeciesReactivityNote | Basedonsequencehomology,broadspeciescross-reactivityisexpected. |
AntibodyType | MonoclonalAntibody |
EntrezGeneNumber | |
EntrezGeneSummary | HistonesarebasicnuclearproteinsthatareresponsIBLeforthenucleosomestructureofthechromosomalfiberineukaryotes.Nucleosomesconsistofapproximately146bpofDNAwrappedaroundahistoneoctamercomposedofpairsofeachofthefourcorehistones(H2A,H2B,H3,andH4).Thechromatinfiberisfurthercompactedthroughtheinteractionofalinkerhistone,H1,withtheDNAbetweenthenucleosomestoformhigherorderchromatinstructures.ThisgeneisintronlessandencodesamemberofthehistoneH2Bfamily.TranscriptsfromthisgenelackpolyAtails;instead,theycontainapalindromicterminationelement. |
Modifications | |
PurificationMethod | ProteinGPurified |
UniProtNumber | |
UniProtSummary | FUNCTION:Corecomponentofnucleosome.NucleosomeswrapandcompactDNAintochromatin,limitingDNAaccessibilitytothecellularmachinerieswhichrequireDNAasatemplate.Histonestherebyplayacentralroleintranscriptionregulation,DNArepair,DNAreplicationandchromosomalstABIlity.DNAaccessibilityisregulatedviaacomplexsetofpost-translationalmodificationsofhistones,alsocalledhistonecode,andnucleosomeremodeling.
Hasbroadantibacterialactivity.Maycontributetotheformationofthefunctionalantimicrobialbarrierofthecolonicepithelium,andtothebactericidalactivityofamnioticfluid.
Subunitstructure:ThenucleosomeisahistoneoctamercontainingtwomoleculeseachofH2A,H2B,H3andH4assembledinoneH3-H4heterotetramerandtwoH2A-H2Bheterodimers.Theoctamerwrapsapproximately147bpofDNA.
Subcellularlocation:Nucleus.
Post-translationalmodification:MonoubiquitinationofLys-120bytheRNF20/40complexgivesaspecifictagforepigenetictranscriptionalactivationandisalsoprerequisiteforhistoneH3"Lys-4"and"Lys-79"methylation.ItalsofunctionscooperativelywiththeFACTdimertostimulateelongationbyRNApolymeraseII.
|
MolecularWeight | ~25kDa |