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NEB/SNAP-Cell® Starter Kit/E9100S/1 set
  • NEB/SNAP-Cell® Starter Kit/E9100S/1 set

NEB/SNAP-Cell® Starter Kit/E9100S/1 set

价格: ¥3156.00 市场价: 5260.00

货号: E9100S-1set
品牌: NEB
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    • Description:

      TheSNAP-tag®isanoveltoolforthespecific,covalentattachmentofvirtuallyanymoleculetoaproteinofinterest,providingsimplicityandextraordinaryversatilitytotheimagingofproteinsinliveandfixedcells,andtothestudyofproteinsinvitro.Thecreationofasinglegeneconstructyieldsataggedfusionproteincapableofformingacovalentlinkagetoavarietyoffunctionalgroups,includingfluorophores,biotin,orbeads.Thissystemprovidesapowerfulanduniquetooltostudytheroleofproteinsinavarietyofhighlydynamicprocesses,includingproteintrafficking,turnover,andcomplexformation. 

      TheSNAP-tagisa20kDamutantofthehumanDNArepairproteinO6-alkylguanine-DNAalkyltransferase(hAGT)thatreactsspecificallyandrapidlywithbenzylguanine(BG)andbenzylchloropyrimidine(CP)derivatives,leADIngtocovalentlabelingoftheSNAP-tagwithasyntheticprobe(Figure1).TheSNAP-taghasanumberoffeaturesthatmakeitidealforavarietyofproteinlabelingapplications.TherateofthereactionoftheSNAP-tagwiththesederivativesislargelyindependentofthenatureofthesyntheticprobeattachedtoBG,permittingthelabelingofSNAPfusionproteinswithawidevarietyoffunctionalgroups.ManyoftheseSNAP-tagsubstratesarecell-permeable,allowinglive-cellimagingofproteinexpressionandlocalization(Figure2).TheABIlitytoturnonthesignalatwill,togetherwiththeavailabilityofacell-permeablenonfluorescentblockingagent(SNAP-Cell®Block),allowstime-resolvedpulse-chaseanalysisofproteintrafficking.Finally,theavailabilityoforthogonalproteinlabelingsystemsfromNEBpermitssimultaneouslabelingofmultipleproteinsinasinglecell(CLIP-tag™,aSNAP-tagvariantthatreactsexclusivelywithO2-benzylcytosinesubstrates,andtheACP/MCPtags,smallproteintagswhichcanbeenzymaticallylabeledonthecellsurfacewithCoenzymeAderivatives).

      TheSNAP-CellStarterKitcontainsamammalianexpressionplasmid(pSNAPf)encodingtheSNAP-tagflankedbyrestrictionsitesforcloningageneofinterest,andtwocell-permeablefluorescentSNAP-tagsubstrates.Apositivecontrolplasmid(pSNAPf-Cox8A),encodingaSNAP-taggedprotein(cytochromecoxidase)withawell-characterizedmitochondriallocalization,isalsoincluded.Lastly,anegativecontrol“blockingagent”(SNAP-CellBlock)isincludedthatinteractswiththeSNAP-tag,butisnotfluorescent.Therearetwostepstousingthissystem:subcloningandexpressionoftheproteinofinterestasaSNAPffusion,andlabelingofthefusionwiththeSNAP-tagsubstrateofchoice.

      Figure1:SNAP-tagReactionFigure 1: SNAP-tag Reaction

      Figure2: LivecellimagingofSNAPfFusionProteins.Figure 2. Live cell imaging of SNAPf Fusion proteins

      LiveCHO-K1cellstransientlytransfectedwithpSNAPf-H2B.CellswerelabeledwithSNAP-Cell505-star(green)for15minutesat37°C,5%CO2.
      Figure3: LivecellimagingofSNAPfFusionProteins.
      Figure 3: Live cell imaging of SNAPf Fusion Proteins
      LiveCOS-7cellsexpressingmitochondrialcytochromeoxidase8A-SNAPf(SNAPf-Cox8A)werelabeledwithSNAP-CellTMR-Star(red).NucleiwerecounterstainedwithHoechst33342(blue).

      KitComponents

      Thefollowingreagentsaresuppliedwiththisproduct:

      Storeat(°C)Concentration
      pSNAPfVector-200.5mg/ml
      pSNAPf-Cox8AControlPlasmid-200.5mg/ml
      SNAP-Cell®505-Star10nmol
      SNAP-Cell®TMR-Star-206nmol
      SNAP-Cell®Block-2020nmol

      Notes:

      Forlong-termstorage,allkitcomponentsshouldbestoredat-20˚C.Plasmidsolutionscanbestoredat4˚Cforuptooneweek.Undissolveddyeandblockingsubstratescanbestoredat4˚Cforupto4weeksprotectedfromlightandmoisture.Withproperstorageat-20°Cthesubstratesshouldbestableforatleastthreeyearsdryor3monthsdissolvedinDMSO.NEB10-betaCompetentE.coli(HighEfficiency)(NEB#C3019)isrecommendedforpropagatingandsubcloningofthevectorandcontrolplasmid.
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