| 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 |