| Formulation | 50%glycerol/water(v/v) |
| Storage | -20°C |
| Purity | >95%bySDS-PAGE |
| ActivityDetermination | Clottingassay |
| ShelfLife(properlystored) | 12months |
ThedomainstructureoffactorXisrepresented,where:GLA=regioncontainingγ-carboxyglutamicacidresidues,EGF=regioncontainingsequenceshomologoustohumanepidermalgrowthfactor,AP=activationpeptidereleaseduponconversionofthezymogentotheactiveserineprotease,CATALYTICDOMAIN=regioncontainingtheserineproteasecatalytictriad.ThearrowindicatesthesitewhichisproteolyticallycleavedbyfactorXaseduringactivationofthezymogen.
SampleGelInformation:

| Gel | Novex4-12%Bis-Tris |
|---|---|
| Load | HumanFactorX,1µgperlane |
| Buffer | MOPS |
| Standard | SeeBluePlus2;Myosin(191kDa),PhosphorylaseB(97kDa),BSA(64kDa),GlutamicDehydrogenase(51kDa),AlcoholDehydrogenase(39kDa),CarbonicAnhydrase(28kDa),MyoglobinRed(19kDa),Lysozyme(14kDa) |
Overview:
FactorXisavitaminK-dependentproteinzymogenwhichissynthesizedintheliverandcirculatesinplasmaasatwochainmoleculelinkedbyadisulfidebond(1,2).Priortosecretionintoplasma,post-translationalmodificationsproduce11gamma-carboxyglutamicacid(gla)residuesandasingleb-hydroxyasparticacidresidue,whicharelocatedwithintheNH2-terminallightchain.Thelightchainalsocontainstwoepidermalgrowthfactor(EGF)homologydomains.TheCOOH-terminalheavychainoffactorXcontainsmostofthecarbohydratemoieties,aswellasthelatentserineproteasedomain.TheactivationoffactorXiscatalyzedbyeithertheintrinsicfactorXasecomplex(factorIXa,factorVIIIa,cellularsurfaceandcalciumions)ortheextrinsicfactorXasecomplex(factorVIIa,tissuefactor,cellularsurfaceandcalciumions).ActivationofhumanfactorXbyeithercomplexresultsincleavageatArg52-Ile53oftheCOOH-terminalheavychainandsubsequentreleaseofa52aminoacidactivationglycopeptide.FactorXathenservesastheenzymecomponentoftheprothrombinasecomplexwhichisresponsIBLefortherapidconversionofprothrombintothrombin.TheglaresiduesenablefactorX/Xatobindphospholipid(i.e.cellsurfaces)inacalciumdependentmanner;arequirementforassemblyoftheprothrombinasecomplex.ThefirstEGFhomologydomaincontainsaCa2+bindingsitewhichactsasahingetofoldtheEGFandGLAdomainstowardseachother(12).Thisregionofthemoleculeisinvolvedintherecognitionofcellularbindingdomains.
HumanfactorXisisolatedfromfreshfrozenhumanplasmabyacombinationofconventionaltechniques(3)andimmunoaffinitychromatography(4).InadditiontothestandardhumanfactorXpreparation,Gla-domainlesshumanfactorXisalsoavailable.BovinefactorXisisolatedfromfreshbovineplasmausingamodificationoftheprocedurereportedbyBajajetal.(5,6).Thepurifiedzymogenissuppliedin50%(vol/vol)glycerol/H2Oandshouldbestoredat-20oC.PurityisdeterminedbySDS-PAGEanalysisandactivityismeasuredinafactorXclottingassay.
Properties:
| Localization | Plasma | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Plasmaconcentration | 10µg/ml | ||||||||
| Modeofaction | Zymogen;precursortotheserineproteasefactorXa | ||||||||
| Molecularweight | 58,900(human)(7) 55,100(bovine)(8) | ||||||||
| Extinctioncoefficient |
| ||||||||
| Isoelectricpoint | 4.9-5.2(human)(9) 4.8-5.2(bovine)(9) | ||||||||
| Structure | twosubunits,Mr=16,200and42,000(human),Mr=16,500and39,300(bovine),NH2-terminalgladomain,andtwoEGFdomains | ||||||||
| Percentcarbohydrate | 15%(human)(7) 10%(bovine)(8) | ||||||||
| Post-translationalmodifications | elevenglaresidues(7,8) oneβ-hydroxyaspartate |
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我的邮箱:maoyuanqing@citiz.net
**捷向您推荐美国Trevigen的一款通用PARP分析试剂盒检测试剂盒。该试剂盒是检测凋亡前与凋亡中细胞提取液中PARP活性的理想方案,操作简单,重复性高。其通过检测96孔板上生物素标记的多聚ADP核糖聚合到邻近组蛋白的反应,从而确定已知的或可能的PARP抑制剂。试剂盒中的依托泊苷(Etoposide)是拓扑异构酶Ⅱ抑制剂,在拓扑异构酶Ⅱ切割完DNA后能够稳定该酶。在试剂盒中,依托泊苷作为凋亡诱导的对照参与检测。
通量PARP/凋亡分析试剂盒可广泛应用于1)检测原代、肿瘤等细胞的PARP活性;2)检测凋亡前后的PARP活性;3)利用细胞裂解液筛选PARP抑制剂。
试剂盒特色比色法/化学发光法,无放射性输出。96well,高通量检测。极大地节省了分析时间,提高了使用效率。高敏感性。能够检测到500个细胞中低至0.1mU的PARP。检测范围广。0.1-10mU。样本用量少。仅仅需要10-100ng的提取物。检测时间短。仅需要3h即可完成检测。
**捷向您提供一站式的PARP相关实验解决方案,除了高通量PARP/凋亡分析试剂盒,还有PARP体内药理动力学二代分析试剂盒(PDAII)和通用PAPR分析试剂盒外(含组蛋白包被可拆卸板),以及相关抗体和重组蛋白。
Trevigen是一家快速成长的美国生物技术公司,专注于细胞凋亡、DNA损伤和修复、肿瘤细胞功能与行为等方面研究的肿瘤研究产品和服务。作为Trevigen在中国区域的总代理,**捷与Trevigen一道为中国的科研工作者提供最好、最新的氧化应激、细胞损伤和肿瘤细胞行为研究等领域内的优质产品和技术服务。如果您对上述产品及方案感兴趣,请致电400-6800-868至**捷科技有限公司垂询血管生成研究的相关实验解决方案,或索取最新的产品资料。
A.优点:
多重分析——一次分析可以检测16种干细胞相关的TF
定量比较——二个样本的差异可以定量分析和比较
步骤简单——探针温育、柱分离、板杂交和HRP检测
无需贵重仪器——无需如Luminex那样的贵重仪器
B.原理:
干细胞转录因子活性多重检测阵列试剂用于同时检测多种TF活性。该技术中,基于TFDNA结合位点的一致性序列,制备一系列生物素标记的探针。当探针混合物与核提取物一起温育时,每个探针寻找相应的TF,形成TF/探针复合物,通过柱离心纯化可以很容易与游离探针分开。结合的探针从混合物中分离出来,通过板杂交分析。板孔中预包被上与探针互补的特异序列,捕获的DNA探针进一步用链酶亲和素-HRP检测,化学发光检测仪测定发光强度(RLUs)。

