蛋白纯化试剂盒

Crystallization Trials

Materials

    MiliporefiltertypeHA0.45micron
    Cultureplates(Linbromodel76-033-05)
    ProteininDDWorHEPESbuffer(10mg/mL)
    Vacuumgrease
    Syringewith18Gneedle

Procedure

    1.Milliporefilterallsolutionstobeused.
    2.Dialyzeproteinfor24hoursagainstwater,ifpossIBLe.Otherwise,includeminimumrequirementsforkeepingtheproteinsoluble.IfbufferisnecessaryuseHEPESbuffer.
    3.Fortheinitialscreeningusethebuffersandprecipitantsrecommendedinthefastcrystalscreen(Jancarik,J.&Kim,S.H.1991J.Appl.Cryst.24,409),asinstructed,andthehangingdropmethodwiththeLinbrotissuecultureplatesthathave24wells,1.7cmdiameter,1.6cmdeep.Seediagram.
    4.Useaproteinsolutionwithastartingconcentrationof10mg/mL.Thisconcentrationmayhavetobeadjusteddependingonthenumberofthedropsthatprecipitate.Theconcentrationisaboutcorrectwhenone-thirdtoone-halfofthedropsdevelopprecipitatewithinoneweek.
    5.Deposit0.7mLofreservoirsolutionintothewell.Combine2microlitersoftheproteinsolutionand2microlitersofthereservoirsolutiontomakeuptheproteindroplet.
    6.Incubateoneatroomtemperatureandoneatcold(4-10°C)temperature.

Notes

    1.CrstallizationscreeningkitsandothersuppliesareavailablefromHamptonresearch.

TakenfrommethodsbyJ.JancarikandS.H.Kim

IfyouusemethodsfromtheKinesinsite,weaskthatyoucitetheKinesinHomePageandauthors,ortheappropriatesourcepublicationinyourwork.

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