

Thisproductisfreezedried.Allwatermoleculeshavebeenremoved.

ThisantibodyisshippedwithitsantigenFREEofcharge!
- Peptide(C)ETQMENYDKHVTYNAERS,correspondingtoaminoacidresidues542-559ofratKCNN2 (Accession P70604).Intracellular,C-terminalpart.
- Westernblotanalysis ofratbrainmembranes:1. Anti-KCNN2(KCa2.2,SK2) Antibody#APC-028),(1:200).
2.Anti-KCNN2(KCa2.2,SK2)Antibody,preincubatedwiththenegativecontrolantigen.HumanJurkatTcells(1.5µg/ml)(Desai,R. etal. (2000) J.Biol.Chem. 275,39954.).
Humanandmouseheart(Xu,Y. etal. (2003) J.Biol.Chem. 278, 49085.).
- Rathippocampalslices(2µg/ml)(Kramar,E.A. etal. (2004) J.Neurosci. 24, 5151.).
- ExpressionofKCNN2(SK2)inratcerebralcortexImmunohistochemicalstainingofKCNN2 channelsusing Anti-KCNN2(KCa2.2,SK2) Antibody (#APC-028)inratcerebralcortex.Pictureshowingthethethirdlayer.Notethatbothneural(blackarrows)andglialcells(greenarrows)showintensestaining.ReactionproductisredandcounterstainisH&E.
- Ratneuronsfromhippocampus(1:200)(Wang,W. etal. (2011) Neuropharmacology 60, 901.).
- 1.Kohler,M.etal.(1996)Science273,1709.
- 2.Xia,X.M.etal.(1998)Nature395,503.
- 3.Stocker,M.(2004)Nat.Rev.Neurosci.5,758.
KCa2.2 (KCNN2,SK2)isamemberoftheCa2+-activatedK+ channelfamilywithsmallconductancethatincludes KCa2.1 (KCNN1,SK1)and KCa2.3 (KCNN3,SK3).ThechannelisvoltageinsensitiveandisactivatedbyintracellularCa2+ inthesubmicromolarrange.Ithas,though,asimilartopologytothatofvoltage-dependentK+ channels(KV channels),thatissixtransmembranedomainsandintracellularN-andC-termini.ThefunctionalchannelofalltheKCa2familymembersisamultimericproteincomposedoffourpore-formingsubunits.
KCa2channelsareextremelysensitivetothelevelsofintracellularCa2+ andconcentrationsaslowas300-700nMcanopenthechannelsveryrapidly(5-15ms).Hence,theKCa2channelsarehighlysensitiveandfastCa2+ sensorsresemblingotherknownCa2+-bindingproteins.ThistypeofCa2+-dependentactivationisachievedbytheconstitutivebindingoftheKCa2channelstocalmodulin,ahighlyexpressedCa2+-bindingproteinviaacalmodulin-bindingdomainsituatedatthecytoplasmicC-terminus.
Pharmacologically,theKCa2channelsaretheonlyknowntargetsofthebeevenomtoxin Apamin,withKCa2.1beingtheleastsensitive,KCa2.2themostsensitiveandKCa2.3showingintermediatesensitivity.
KCa2.2ispredominantlyexpressedinthenervoussystemalthoughexpressioninendothelialcells,heartandliverhasbeendescribed.
KCa2.2isknowntobeinvolvedintheregulationofneuronalexcitABIlity.TheydosomainlyviaaphenomenonknownasafterhyperpolarizationinwhichKCa2channelsopeninresponsetoincreasedintracellularCa2+ concentrationsthatresultfromtheentryofextracellularCa2+ throughvoltage-dependentCa2+ channelsduringactionpotentials.Inthisway,KCa2channelseffectivelyformaCa2+-mediatedfeedbackloop.
Anti-KCNN2(KCa2.2,SK2)Antibody(#APC-028)isahighlyspecificantibodydirectedagainstanepitopeoftheratprotein.Theantibodycanbeusedinwesternblot,immunocytochemistry,immunohistochemistry,andimmunoprecipitationapplications.IthasbeendesignedtorecognizeKCNN2fromhuman,rat,andmousesamples.
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2 一抗是属于哪个类或亚类
二抗需与一抗的类别或亚类相匹配。这通常是针对单克隆抗体而言。多克隆抗体主要是IgG类免疫球蛋白,因此相应的二抗就是抗IgG抗体.
单克隆抗体的类别及亚类通常会在产品列表中列出,如果你的一抗是小鼠IgM,那么相应的二抗就应当是抗小鼠IgM,或是抗小鼠IgG抗体。
如果单克隆一抗是小鼠IgG的某一亚类(IgG1,IgG2a,IgG2b,IgG3),那么几乎所有的抗小鼠IgG都可以与之结合,或者你也可以选择专门针对这一亚类的二抗,例如,如果你的一抗是小鼠IgG1,那么你可以选择抗IgG1的二抗,此种抗体在双标记实验中尤其适合。
如果你不知道一抗是哪一类别或亚类,那么抗小鼠IgG是一个不错的选择,因为此种抗体可以识别大多数类型的IgG免疫球蛋白。
目前大量制备单抗的方法主要有两大系统,一是动物体内生产法,这是国内外实验室所广泛采用;另一是体外培养法。
(1)动物体内生产单抗的方法
迄今为止,通常情况下均采用动物体内生产单抗的方法,鉴于绝大多数动物用杂交瘤均由BALB/c小鼠的骨髓瘤细胞与同品系的脾细胞融合而得,因此使用的动物当然首选BALB/c小鼠。本方法即将杂交瘤细胞接种于小鼠腹腔内,在小鼠腹腔内生长杂交瘤,并产生腹水,因而可得到大量的腹水单抗且抗体浓度很高。可见该法操作简便、经济,不过,腹水中常混有小鼠的各种杂蛋白(包括Ig),因此在很多情况下要提纯后才能使用,而且还有污染动物病毒的危险,故而最好用SPF级小鼠。
(2)体外培养生产单抗的方法
总体上讲,杂交瘤细胞系并不是严格的贴壁依赖细胞(anchoragedependentcell,ADC),因此既可以进行单层细胞培养,又可以进行悬浮培养。杂交瘤细胞的单层细胞培养法是各个实验室最常用的手段,即将杂交瘤细胞加入培养瓶中,以含10-15%小牛血清的培养基培养,细胞浓度以1×106-2×106/ml为佳,然后收集培养上清,其中单抗含量约10-50ug/ml。显然,这种方法制备的单抗量极为有限,无疑是不适用于单抗的大规模生产。要想在体外大量制备单抗,就必须进行杂交瘤细胞的大量(高密度)培养。单位体积内细胞数量越多,细胞存活时间越长,单抗的浓度就越高,产量就越大。
羊抗兔IgG抗体同理。
不过现在的技术发达了,为了大批量生产抗体,大多数都是通过单克隆技术完成的。
PS:你的IGg的写法有误,应为IgG或者IgM。。。
确定了需要检测样品的种属,就可以选择对应的一抗
而二抗是根据一抗来选择的,比如一抗是小鼠来源的,二抗就要是抗小鼠的

