| Overview |  PrinterFriendlyVersion |
| Ex/Em(nm) | 657/700 |
| MW | 1994.41 |
| CAS# | N/A |
| Solvent | DMSO |
| Storage | F/D/L |
| Category | SuperiorLabelingDyes mFluor™DyesandKits |
| Related | Generalproteins LabelingviaAminoGroups BiochemicalAssays |
| Spectrum | AdvancedSpectrumViewer |
1. Prepareproteinstocksolution(SolutionA):
a. Mix100µLofareactionbuffer(e.g.,1Msodiumcarbonatesolutionor1MphosphatebufferwithpH~9.0)with900µLofthetargetproteinsolution(e.g.antibody,proteinconcentration>2mg/mlifpossible)togive1mLproteinlabelingstocksolution.
b. Note1:ThepHoftheproteinsolution(SolutionA)shouldbe8.5±0.5.IfthepHoftheproteinsolutionislowerthan8.0,adjustthepHtotherangeof8.0-9.0using1Msodiumbicarbonatesolutionor1MpH9.0phosphatebuffer.
c. Note2:Theproteinshouldbedissolvedin1Xphosphatebufferedsaline(PBS),pH7.2-7.4.IftheproteinisdissolvedinTrisorglycinebuffer,itmustbedialyzedagainst1XPBS,pH7.2-7.4,toremovefreeaminesorammoniumsalts(suchasammoniumsulfateandammoniumacetate)thatarewidelyusedforproteinprecipitation.
d. Note3:ImpureantibodiesorantibodiesstABIlizedwithbovineserumalbumin(BSA)orgelatinwillnotbelabeledwell.Thepresenceofsodiumazideorthimerosalmightalsointerferewiththeconjugationreaction.Sodiumazideorthimerosalcanberemovedbydialysisorspincolumnforoptimallabelingresults.
e. Note4:Theconjugationefficiencyissignificantlyreducediftheproteinconcentrationislessthan2mg/mL.Foroptimallabelingefficiencythefinalproteinconcentrationrangeof2-10mg/mLisrecommended.
2. Preparedyestocksolution(SolutionB):
a. AddanhydrousDMSOintothevialofmFluor™dyeSEtomakea10-20mMstocksolution.Mixwellbypipettingorvortex.
b. Note:Preparethedyestocksolution(SolutionB)beforestartingtheconjugation.Usepromptly.Extendedstorageofthedyestocksolutionmayreducethedyeactivity.SolutionBcanbestoredinfreezerfortwoweekswhenkeptfromlightandmoisture.Avoidfreeze-thawcycles.
3. Determinetheoptimaldye/proteinratio(optional):
a. Note:Eachproteinrequiresdistinctdye/proteinratio,whichalsodependsonthepropertiesofdyes.Overlabelingofaproteincoulddetrimentallyaffectsitsbindingaffinitywhiletheproteinconjugatesoflowdye/proteinratiogivesreducedsensitivity.Werecommendyouexperimentallydeterminethebestdye/proteinratiobyrepeatingSteps4and5usingaserialdifferentamountoflabelingdyesolutions.Ingeneral4-6dyes/proteinarerecommendedformostofdye-proteinconjugates.
b. Use10:1molarratioofSolutionB(dye)/SolutionA(protein)asthestartingpoint:Add5µlofthedyestocksolution(SolutionB,assumingthedyestocksolutionis10mM)intothevialoftheproteinsolution(95µlofSolutionA)witheffectiveshaking.Theconcentrationoftheproteinis~0.05mMassumingtheproteinconcentrationis10mg/mLandthemolecularweightoftheproteinis~200KD.
i. Note:TheconcentrationoftheDMSOintheproteinsolutionshouldbe<10%
c. Runconjugationreaction(seeStep4below).
d. Repeat#3.2withthemolarratiosofSolutionB/SolutionAat5:1;15:1and20:1respectively.
e. Purifythedesiredconjugatesusingpremadespincolumns.
f. Calculatethedye/proteinratio(DOS)fortheabove4conjugates(seenextpage).
g. Runyourfunctionaltestsoftheabove4conjugatestodeterminethebestdye/proteinratiotoscaleupyourlabelingreaction.
4. Runconjugationreaction:
a. Addtheappropriateamountofdyestocksolution(SolutionB)intothevialoftheproteinsolution(SolutionA)witheffectiveshaking.
b. Note:ThebestmolarratioofSolutionB/SolutionisdeterminedfromStep3.6.IfStep3isskipped,werecommendtouse10:1molarratioofSolutionB(dye)/SolutionA(protein).
c. Continuetorotateorshakethereactionmixtureatroomtemperaturefor30-60minutes.
5. Purifytheconjugation
a. Thefollowingprotocolisanexampleofdye-proteinconjugatepurificationbyusingaSephadexG-25column.
b. PrepareSephadexG-25columnaccordingtothemanufactureinstruction.
c. Loadthereactionmixture(directlyfromStep4)tothetopoftheSephadexG-25column.
d. AddPBS(pH7.2-7.4)assoonasthesamplerunsjustbelowthetopresinsurface.
e. AddmorePBS(pH7.2-7.4)tothedesiredsampletocompletethecolumnpurification.Combinethefractionsthatcontainthedesireddye-proteinconjugate.
Note1:Forimmediateuse,thedye-proteinconjugateneedbedilutedwithstainingbuffer,andaliquotedformultipleuses.
Note2:Forlongertermstorage,dye-proteinconjugatesolutionneedbeconcentratedorfreezedried(seebelow).
| References&Citations |  CitationExplorer |
DeepSequencingAnalysisoftheEha-RegulatedTranscriptomeofEdwardsiellatardaFollowingAcidification
Authors:DGao,NLiu,YLi,YZhang,GLiu
Journal:Metabolomics(LosAngel)(2017):2153--0769
Suramininhibitscullin-RINGE3ubiquitinligases
Authors:KennethWu,RobertAChong,QingYu,JinBai,DonaldESpratt,KevinChing,ChanLee,HaibinMiao,IngerTappin,JerardHurwitz
Journal:ProceedingsoftheNationalAcademyofSciences(2016):E2011--E2018
GlycosaminoglycanmimicrybyCOAMreducesmelanomagrowththroughchemokineinductionandfunction
Authors:HelenePiccard,NeleBerghmans,EvaKorpos,ChrisDillen,IlseVanAelst,SandraLi,ErikMartens,SandraLiekens,SamNoppen,JoVanDamme
Journal:InternationalJournalofCancer(2012):E425--E436
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然后是碱性荧光染料，造纸厂用来增加纸的亮度。
直接和分散的荧光黄，印染厂用来增加棉质和化纤面料的艳度
For principle,look at this site:
碘化丙啶(propiolium iodide,PI)能嵌入DNA双螺旋中,可使荧光强度增加约20倍,以488nm波长激发,DNA/PI复合物最大的发射波长约为615nm.
1.小鼠Lewis肺癌细胞DNA含量测定方法
(1).从C57BL/6小鼠上切除肿块,在培养皿内用PBS冲洗.
(2).去除结缔组织及脂肪,剪碎肿块.
(3).小碎片移入1.20×38mm注射针,加压使其通过,于4℃条件下重悬细胞于HBSS中.
(4).将200～300μL细胞悬液(5×105细胞/mL)中加入3mL PI(50μg/mL),染色3LL细胞,于4℃存放20～30分钟.
(5).测定580～750nm之间的发射荧光,以去除末结合PI产生的激发光与发射光谱线之间的重叠部分.
是欢快活泼的光辉色彩，是暖色系中最温暖的色，它使人联想到金色的秋天，丰硕的果实；
是一种富足、快乐而幸福的颜色。让人感觉成一种稳重、含蓄又明快的温暖；
橙色也会带来一种甜甜的感觉。
