Repligen(RGEN)股东户数页面_淘股吧 Taoguba.com.cn
来自 : 蚂蚁淘
Rapidlythawandimmediatelyplaceoniceonealiquoteachofaxonemes,GolgiorERmembranes,45uMtubulin,ratlivercytosol,and20xenergyregenerationsystem.DilutetheaxonemeswithPMBuffertotheproperdilution(determinedafterpreparation,seesupportprotocol2below)andprepare6xmembranes(determinedafterpreparation,seesupportprotocol4below)bydilutingorganelleswithPMbuffercontaining1mMGTP.Prepareandplaceonicea30ulMembraneMix:5ul6xGolgiorERmembranes1.5ulof20xenergyregenerationsystem10ulof45uMtubulin1ulof15mMMgGTP12.5ulofcytosolPerfuseaxonemesintoasimpleperfusionchamberbyslowlypipeting~10ulofproperlydilutedaxonemesagainstoneopenendofthechamberandallowingthechambertofill.Becarefultoavoidintroducinglargebubblesintothechamber.Placetheperfusionchamberintothehumidchamberandincubateatroomtemperaturefor10mintoallowtheaxonemestoadheretotheglass.Washoutunadheredaxonemes.SlowlyPipette10ulofPMbufferagainstoneendoftheperfusionchamber,whilesimultaneouslywickingexcessbufferfromtheoppositesideofthechamberwiththetipofasquareoffilterpaper.Repeatthis2moretimes.Dilute5ulof45uMtubulinwith10ulofPMcontaining1mMMgGTP.Perfusethedilutedtubulinintothechambercontainingthewashedaxonemes,placeadropofimmersionoilonthetopandbottomoftheslide,andtransferittothemicroscopestage.Focusontheaxonemeswiththe100xobjectivelens.ItisdifficulttofocusonaxonemesonthesurfaceofthecoverslipbecauseoftheirverysmallsizeandtheverybrightIlluminationneededforVE-DIC.Aligntheslideonthestagesothatanedgeofthedoublesticktapeformingtheperfusionchamberperfectlybisectstheareailluminatedbythemicroscopecondenserlens.Immersethe100xobjectivelensinoil,andfocusontheedgeofthetape.Whenyouhavebroughttheedgeofthetapeintoview,backofffinefocusuntiltheveryedgeofthetapejustbeginstogooutoffocus.Ifyoumovetheslidesothelensiswithintheareacoatedwithaxonemes,youshouldnowbequiteclosetofocusandtheaxonemesshouldbefoundwithlittledifficulty.OptimizetheimageforvisualizationofindividualMTsbyaligningthemicroscopeforKoehlerillumination(seeunitbyE.D.Salmon),andusetherealtimeimageprocessortoperformbackgroundsubtraction,contrastenhancement,andframeaveraging(seeSalmonandTran,1998).ObserveandrecordontoS-VHSvideotapeimagesofpolymerizationdynamicsofindividualMTsasthearenucleatedoffofaxonemes.Notethedifferencebetweentheplus(longer,fastergrowingMTs)andminus(shorter,slowergrowingMTs)endsoftheaxonemes.DuringtheobservationofMTdynamics,allowthemembranemixtowarmtoroomtemperature.Perfuse12ulofmembranemixintothesimpleperfusionchamberonthemicroscopestage.Sealthechamberedgesonbothedgeswithadropofmeltedvalap.ObserveandrecordthedynamicinteractionsbetweentheorganellesandMTs.Notethatoftenittakesupto45minformotilitytodevelop.Thistimeperiodisproportionaltoroomtemperature
免责声明 本文仅代表作者个人观点,与本网无关。其创作性以及文中陈述文字和内容未经本站证实,对本文以及其中全部或者部分内容、文字的真实性、完整性、及时性本站不做任何保证或承诺,请读者仅作参考,并请自行核实相关内容。
版权声明 未经蚂蚁淘授权不得转载、摘编或利用其他方式使用上述作品。已经经本网授权使用作品的,应该授权范围内使用,并注明“来源:蚂蚁淘”。违反上述声明者,本网将追究其相关法律责任。