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Discovery Antibodies/Apamin-Biotin/5 x 10 µg/STA-200-B-5 x 10 µg

价格
¥38000.00
货号:STA-200-B-5x10µg
浏览量:50
品牌:Discovery
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商品描述
Cat#:STA-200-B
  • LyophilizedPowder
  • BioassayTested
  • OriginSyntheticpeptide
    MW:2367Da.
    Purity:>98%
    Effectiveconcentration1-50nM.
    SequenceBiotin-CNCKAPETALCARRCQQH.
    ModificationsDisulfidebondsbetweenCys1-Cys11,andCys3-Cys15.His18 -C-terminalamidation.
    LabelLC-Biotin.Theextentoflabelingis1moleculeofbiotinpermoleculeofApamin.
      • Apamin-Biotin
    ActivityApaminisablockerofvoltage-independentCa2+-activatedK(SK)channels1.
      • Shahidi,S. etal. (1993) Biochim.Biophys.Acta 1157, 74.
    ShippingandstorageShippedatroomtemperature.Productassuppliedcanbestoredintactatroomtemperatureforseveralweeks.Forlongerperiods,itshouldbestoredat-20°C.
    SolubilityAnyaqueousbuffer.Centrifugeallproductpreparationsbeforeuse(10000xg5min).
    StorageofsolutionsUptotwoweeksat4°Corthreemonthsat-20°C.
      • Apamin-Biotin
        AlomoneLabsApamin-BiotinblocksratSK2channelsstablytransfectedinHEK293Tcells.
        A.Timecourseof Apamin-Biotin (#STA-200-B)actiononSK2channels.Currentamplitudeswereplottedasafunctionoftime.Membranepotentialwasheldat-80mVandcellswerestimulatedbya150msvoltagerampfrom-120mVto+60mVevery10sec.1nM,10nMand50nMApamin-Biotinwereperfusedduring120secasindicatedbythebarat0mV.B.SuperimposedexamplesofSK2channelcurrentintheabsence(control,black)andpresenceof1nM(green),10nM(red)and50nM(blue)Apamin-Biotin(takenfromtheexperimentinA).
        Apamin-Biotin
        AlomoneLabsApamin-Biotinstainsratparietalcortex.
        Lightly-fixedsectionsofratbrainwereincubatedovernightwith Apamin-Biotin (#STA-200-B)(1nM)followedby45minutesfixationincold4%paraformaldehydeandfollowedbytheadditionofstreptavidinlabeledwithATTO-594.Mostofthestainingisseeninpyramidalneurons(horizontalarrows)aswellasinastrocyte-likeprocesses(verticalarrows).
    References-Scientificbackground
    • 1.Gauldie,J. etal. (1976) Eur.J.Biochem61, 369.
    • 2.Logsdon,N.J. etal. (1997) J.Biol.Chem272,32723.
    • 3.ShahM.andHaylettD.G.(2000) Br.J.Pharm. 129, 627.
    • 4.StrobaekD. etal. (2000) Br.J.Pharm. 129, 991.
    • 5.Barfod,E.T. etal. (2001) Am.J.Physiol. 280, C836.
    • 6.Desai,R. etal.(2000) J.Biol.Chem275,39954.
    • 7.Hosseini,R. etal. (2001) J.Physiol. 535, 323.
    • 8.Kong,I.D. etal. (2000) Am.J.Physiol. 278,C352.
    • 9.Nagayama,T. etal.(2000) Am.J.Physiol279,R1731.
      • Apaminisanaturalpeptideisolatedandpurifiedfrom Apis mellifera beevenom.ApaminblockssmallconductanceCa2+-activatedK+ channels(SK).ItisspecificfortheSK1-3isoforms,butineffectiveinblockingothercalciumactivatedK+ channels2.Inmammaliancelllines,ApaminblocksexpressedhSK1withanIC50 of~10nM3,rSK1 andrSK2 withIC50 of~3and<1nMrespectively4 andliverrSK3 withIC50<1nM.5 InJurkatT-cells,5nMofApaminblocks70%ofhSK2currents.6

        BlockingthesechannelswithApaminslowsdownneuronalactivityafterhyperpolarization7,aswellassmoothmusclecontraction8 andcatecholaminesecretioninadrenalglands.Electrophysiologyapplicationoflong(~400ms)voltageramps,coveringthewholephysiologicalrange(-160to+40mV),inthewholecellpatch-clamporvoltageclampconfigurations,beforeandafterbathperfusionofthedrug,allowsthedetectionoftheblockedchannelcurrents(bycomparison).1

    TargetKCa2K+ channels
    NetPeptideContent:100%
    Lastupdate:24/09/2019

    Apamin-Biotin(#STA-200-B) isahighlypure,synthetic,andbiologicallyactiveconjugatedpeptidetoxin.

    Wegladlytakeoncollaborationprojects.PleaseContactUs.

    Forresearchpurposesonly,notforhumanuse
    Discovery Antibodies的Cyclin dependant kinase 2 (CDK2) is a serine/threonine protein kinase which controls both G1/S and G2/M transitions. CDKs along with cyclins and CDK inhibitors regulate cell cycle progression. Specific cyclins activate different CDKs; in early G1, CDK2 pairs with cyclin E to promote entry into the S phase before switching to partner with cyclin A to drive the cell through S phase. Once activated CDKs phosphorylate downstream proteins to initiate signalling cascades. CDK2 phosphorylates and inactivates the RB1 (pRb) tumour suppressor family of proteins.CDK的活动受到严格控制。CDK2活性可以被包括P21在内的一系列抑制剂抑制。细胞周期失调和增殖控制的丧失与细胞转化和癌症密切相关。CDK2在DNA损伤反应(DDR)中的细胞周期停滞中也似乎起着积极作用,它的抑制作用会阻碍DDR,并使细胞对电离辐射敏感,从而诱导细胞死亡。该抗体与AlexaFluor®488偶联。AlexaFluor®488是一种流行的鲜绿色荧光染料,具有高pH稳定性。
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