Thermostableligasethatcatalyzestheintramolecularligation(i.e.circularization)ofssDNAtemplates
Applications
- ProductionofssDNAtemplatesforrolling-circlereplicationorrolling-circletranscriptionexperiments.
- ProductionofssDNAtemplatesforRNApolymeraseandRNApolymeraseinhibitorassays.
CircLigase™ssDNALigase*isathermostableATP-dependentligasethatcatalyzesintramolecularligation(i.e.circularization)ofssDNAtemplateshavinga5´-phosphateanda3´-hydroxylgroup.IncontrasttoT4DNALigaseandAmpligase®DNALigase,whichligateDNAendsthatareannealedadjacenttoeachotheronacomplementaryDNAsequence,CircLigasessDNALigaseligatesendsofssDNAintheabsenceofacomplementarysequence.TheenzymeisthereforeusefulformakingcircularssDNAmoleculesfromlinearssDNA.CircularssDNAmoleculescanbeusedassubstratesforrolling-circlereplicationorrolling-circletranscription.
LinearssDNAof>30basesiscircularizedbyCircLigaseenzyme.Understandardreactionconditions,virtuallynolinearconcatamersorcircularconcatamersareproduced.InadditiontoitsactivityonssDNA,CircLigaseenzymealsohasactivityinligatingasingle-strandednucleicacidhavinga3´-hydroxylribonucleotideanda5´-phosphorylatedribonucleotideordeoxyribonucleotide.
UnitDefinition:OneunitofCircLigaseenzymeconverts1pmolofalinear5´-phosphorylatedCircLigaseStandard55-merOligointoanexonucleaseI-resistantcircularformin1hourat60°Cunderstandardassayconditions. StorageBuffer:50%glycerolcontaining50mMTris-HCl(pH7.5),100mMNaCl,0.1mMEDTA,1mMDTT,and0.1%Triton®X-100. 10XReactionBuffer:0.5MMOPS(pH7.5),0.1MKCl,50mMMgCl2,and10mMDTT.TheReactionBufferdoesnotcontain QualityControl:CircLigasessDNALigaseisfreeofdetectablephosphatase,DNAexo-andendonuclease,andRNaseactivities. ProductCitations
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ORDERINFORMATION
CircLigase™ssDNALigaseisprovidedat100U/μl.
Contents:CircLigase™ssDNALigase,CircLigase™10XReactionBuffer,1mMATP,50mMMnCl2,CircLigase™ssDNAControlOligo,SterileWater.
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