Rabbitpolyclonalantibody
PooledSerumTheantigenisa fusionproteinofthemousecardiactroponinIholoprotein.
Theantibodyisunpurifiedneatserum.
TroponinI(cTnI)is1of3subunits,alongwithtroponinC(TnC)andtroponinT(TnT)oftroponincomplexfoundincardiacmuscle.cTnIbindstoactininthinmyofilamentstoholdthetroponin-tropomyosincomplexinplace.PhosphorylationofcardiacisoformofTnIatserines22,23intheuniqueamino-terminalendmoleculedecreasesthecalciumsensitivityofthesarcomere,promotescalciumdissociationfromtroponinCandbyextensionenhancesratesofcross-bridgecyclinganddiastolicrelaxation(Noland,Jr.etal.,1995;Nolandetal.,1989).Inaddition,studiesusingreconstitutedfibersandmutationalanalysishaveshownthatPKCphosphorylationofTnI(largelyatSer43)inhibitstheactin-crossbridgereactionandreducestheCa++dependentactomyosinATPaserateaswellasthecalciumsensitivityofforcegeneration(Noland,Jr.andKuo,1991).PhosphorylationatThr144(mediatedbyseveralPKCisoforms)reducesmaximaltensiondevelopmentandcross-bridgecyclingrates(Sumandeaetal.,2008).Importantly,changesinthephosphorylationateachofthesesiteshavebeenshowntobestage-specificwithregardtocardiacdiseaseprogression(Walkeretal.,2010).
100μlneatserum.Adequateamountofmaterialtoconduct10-miniWesternblots.
Forlongtermstorage–20°Cisrecommended.Stableat–20°Cforatleast1year.
NolandTA,Jr.,GuoXD,RaynorRL,JideamaNM,Averyhart-FullardV,SolaroRJ,KuoJF(1995)CardiactroponinImutants–PhosphorylationbyproteinkinasesCandAandregulationofCa2+-stimulatedMgATPaseofreconstitutedactomyosinS-1.JBiolChem270:25445-25454.
NolandTA,Jr.,KuoJF(1991)ProteinkinaseCphosphorylationofcardiactroponinIortroponinTinhibitsCa2(+)-stimulatedactomyosinMgATPaseactivity.JBiolChem266:4974-4978.
NolandTAJr,RaynorRL,KuoJF(1989)IdentificationofsitesphosphorylatedinbovinecardiactroponinIandtroponinTbyproteinkinaseCandcomparativesubstrateactivityofsyntheticpeptidescontainingthephosphorylationsites.JBiolChem264:20778-20785.
SumandeaMP,RybinVO,HinkenAC,WangC,KobayashiT,HarletonE,SievertG,BalkeCW,FeinmarkSJ,SolaroRJ,SteinbergSF(2008)TyrosinephosphorylationmodifiesproteinkinaseCdelta-dependentphosphorylationofcardiactroponinI.JBiolChem283:22680-22689.
WalkerLA,WalkerJS,AmblerSK,ButtrickPM(2010)Stage-specificchangesinmyofilamentproteinphosphorylationfollowingmyocardialinfarctioninmice.JMolCellCardiol48:1180-1186
PhosphoSolutions 由 Drs 于 2001 年创立。Michael D. Browning、John W. Haycock 和 Andrew J. Czernik,他们在 Paul Greengard 博士的实验室共同工作,Paul Greengard 博士因研究蛋白质磷酸化在信号转导中的作用而共同获得 2000 年诺贝尔医学奖在神经系统中。这种专业知识使我们主要关注神经科学领域中感兴趣的蛋白质。我们位于科罗拉多州奥罗拉的 Fitzsimons 生命科学园区,是一支敬业、友好、勤奋的科学家团队,致力于为您提供最优质的抗体和业内客户支持。