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AAT Bioquest/Helixyte™ Green Fluorimetric dsDNA Quantitation Kit *High Sensitivity*/17651/200 Tests
| Overview |  PrinterFriendlyVersion |
| Ex/Em(nm) | 501/520 |
| MW | N/A |
| CAS# | N/A |
| Solvent | N/A |
| Storage | F/D/L |
| Category | NucleicAcidDetection DNADetection |
| Related | LabelingCells FluorescenceImaging BiochemicalAssays |
1.Preparing1XAssayBuffer
Preparea1XAssaybufferbydilutingtheconcentratedbuffer20-foldwithsterile,distilled,DNase-freewater.
2.PreparingHelixyteGreen™workingsolution
PrepareHelixyteGreen™workingsolutionbymakinga200-folddilutionoftheconcentratedDMSOsolutionin1Xassaybuffer.Forexample,toprepareenoughworkingsolutiontoassay10samplesina2mLfinalvolume,add50µLofHelixyteGreen™(ComponentA)into10mLofAssayBuffer(fromStep1). Protecttheworkingsolutionfromlightbycoveringitwithfoilorplacingitinthedark.
Note1:Werecommendpreparingthissolutioninaplasticcontainerratherthanglass,asthedyemayadsorbtoglasssurfaces.
Note2:Forbestresults,thissolutionshouldbeusedwithinafewhoursofitspreparation.
3.PrepareserialdilutionsofdsDNAstandard(0to2µg/mL):
3.1 Forhighrangestandardcurve:add30μLof100μg/mLdsDNAstocksolution(ComponentC)to1.47mLof1XAssaybuffer(FromStep1)tohave2000ng/mLdsDNAsolution,andthenperform1:2and1:10serialdilutionstoget1000,100,10,1and0ng/mL.
3.2 Forlowrangestandardcurve:add40μLof2μg/mLdsDNAstocksolution(FromStep3.1)to1.56mLof1XAssaybuffer(FromStep1)tohave50ng/mLdsDNAsolution,andthenperform1:2and1:10serialdilutionstoget25,2.5,0.25,0.025and0ng/mL
4.RundsDNAassay:
4.1 Add1mLofHelixyteGreen™workingsolution(fromStep2)toeachcuvettecontaining1mLofthedsDNAstandard,blankcontrol,andtestsamplestomakethetotaldsDNAassayvolumeof2mL/cuvette.
4.2 Incubatethereactionatroomtemperaturefor5to10minutes,protectedfromlight.
4.3 MonitorthefluorescenceincreasewithaspectroflurometeratEx/Em=490/525nm.
Note:Tominimizephotobleachingeffects,keepthetimeforfluorescencemeasurementconstantforallsamples.
4.4 Thefluorescenceinblankwells(withtheAssaybufferonly)isusedasacontrol,andissubtractedfromthevaluesforthosecuvetteswiththedsDNAreactions.TheDNAconcentrationofthesamplesisdeterminedfromthestandardcurvegeneratedinDNAStandardCurve.
| References&Citations |  PrinterFriendlyVersion |
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