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- Nucleic Acid Purification|Protein Expression & Purification Technologies|RNA Reagents
- Next Generation Sequencing Library Preparation|PCR, Polymerases & Amplification Techno
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公司地址
苏州工业园区生物纳米园A4#216
联系电话
4000-520-616 / 18915418616
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0512-67156496
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info@ebiomall.com
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https://www.ebiomall.com
商品描述
Description:


AnoptimizedblendofaThermostableDNALigaseandaproprietaryadditive,HiFiTaqDNALigaseefficientlysealsnicksinDNAwithunmatchedhighfidelity.Theformationofaphosphodiesterbondbetweenjuxtaposed5´phosphateand3´hydroxylterminioftwoadjacentoligonucleotidesthatarehybridizedtoacomplementarytargetDNAisenhancedintheimprovedreactionbufferandmismatchligationisdramaticallyreduced(1).Theimprovedformulationallowshigherresolutiondiscriminationbetweenligationdonorsandacceptors,enablingprecisedetectionofSNPsandotherallelevariants.HiFiTaqDNALigaseisactiveatelevatedtemperatures(37–75°C)(2,3).
PleasenotethatHiFiTaqDNALigaseisintendedforuseinmoleculardiagnosticsapplicationsthatdependonhighfidelitynickligation.ItisnotasubstituteforT4DNAligaseandisnotsuitableforcloningapplicationsoradapterligation/NGSlibraryprep.
Useouronlinetool,ThermostableLigaseReactionTemperatureCalculator,tohelpselectthecorrectincubationtemperatureforHiFiTaqDNALigase.
Figure1:HiFiTaqDNALigasedisplaysincreasedfidelity

(A)Schematicofmultiplexedsubstratepools.EachsubstratepoolcontainedasinglesplintwithadefinedNNattheligationjunction(e.g.,AA,AC,AG…)alongwithallfourupstreamprobesandallfourFAM-labeleddownstreamprobes.Eachprobethatencodesthebaseattheligationjunctionisofuniquelengthallowingforseparationandanalysisbycapillaryelectrophoresis.Atotalof16substratepoolswereprepared,oneforeachuniquesplint.(B)ComparisonoftheligationfidelityofAmpligase(Epicentre),TaqDNALigaseandHiFiTaqDNALigase.Fidelitymeasurementswereperformedusing1μlofligaseina50μlreactionmixtureinthesuppliedbuffersat1Xconcentration.Reactionswereincubated30minat55°C,usingmultiplexedsubstratepoolsasoutlinedin(A).Rowsrepresentasingletemplatesequence,whilecolumnsindicateaparticularligationproductresultingfromaspecificpairofprobesligatingwiththeindicatedbasesattheligationjunction.Adotindicatesdetectionofaproduct(seelegendabove).ThediagonalfromthetoplefttothebottomrightrepresentsWatson-Crickligationproducts;allotherspacesindicatemismatchligationproducts.WhileTaqDNALigaseandAmpligaseperformsimilarlyundertheseconditions,witharangeofmismatchproductsdetectable,HiFiTaqDNALigaseshowsdramaticallyfewermismatchproductswhilemaintaininghighyields(imageadaptedfromReference1).
Figure2:HiFiTaqDNALigaseexhibitsincreaseddiscriminationatbothsidesoftheligationjunction

Oligonucleotideprobestargetinga35bpregionoftheλintegrasegenewereincubatedwith16.7fmolofλgenomicDNA.LigationproductsformedweredetectedbyqPCRusingSYBR®Green.HiFiTaqDNALigase(NEB#M0647)displaysincreasedfidelityoverTaqDNALigase(NEB#M0208)andAmpligase,showingalargerΔCtvaluebetweenprobesfullycomplementarytothetargetsequenceandthosewithamismatchedbasepairattheligationjunction.

HiFiTaqDNALigaseandAmpligase®(1µlenzymeina50µlreaction)werecycled(80°Cfor90seconds/94°Cfor10 seconds)upto100 timesintheirrespective1Xreactionbuffer.LigaseactivitywasassayedusingaFAM-labelednickeddsDNAsubstratedetectedbycapillaryelectrophoresis.

TheC:GWatson-Crickbasepairbetweentheupstreamprobe3´-terminalbaseandthecomplementarystrandmakesthisaparticularlydifficultjunctionforaligasetodiscriminateagainstmismatchligationproducts(1).
ProductSource
PurifiedfromanE.colistrainthatcarriestheclonedligasegenefromahyperthermophilicorganism.ReagentsSupplied
Thefollowingreagentsaresuppliedwiththisproduct:
| Storeat(°C) | Concentration | |
| HiFiTaqDNALigaseReactionBuffer | -20 | 10X |


