
ProductName | Nuclearfactor-like2,NRF2,NFE2L2 |
Size | 100µg |
Description | Nuclearfactor(erythroid-derived2)-like2,alsoknownasNFE2L2orNrf2,isatranscriptionfactorthatbindstotheantioxidantresponseelement(ARE)oftargetgenesinresponsetooxidativestressandincreasesthetranscriptionofavarietyofantioxidativeandcarcinogen-detoxificationenzymes.Stresscanresultfromavarietyofcauses,includingfasting,overfeeding,endogenouscompounds,exposuretochemicals,orenvironmentalagents,whichgenerallyleadstoincreasedproductionofreactiveoxygenspecies(ROS).Undernormalconditions,Nrf2isboundtoKelchlike-ECH-associatedprotein1(Keap1).Keap1actsasasubstrateadaptorproteinforCullin3-basedubiquitination,whichresultsinthedegradationofNrf2,andundernormalconditionsNrf2hasahalf-lifeofonly20minutes.OxidativestressorelectrophilicstressdisruptscriticalcysteineresiduesinKeap1,resultinginadisruptionoftheKeap1-Cul3ubiquitinationsystemandabuild-upofNrf2inthecytoplasmandtranslocatestothenucleus,whereitbindstoAREstoinduceexpressionofmultiplecytoprotectiveenzymes,includingNAD(P)H-quinoneoxidoreductase1(NQO1),glutathioneS-transferases(GSTs),andhemeoxygenase1(HO-1)(1,2). Nrf2alsoinducesseveraltranscriptionfactorsinvolvedinmitochondrialbiogenesis.ManylinesofevidencesuggestthatmitochondrialdysfunctionplaysacentralroleinthepathogenesisofPD.Thus,Nrf2maybeapromisingtargettocounteractmitochondrialdysfunctionanditsconsequencesinParkinson'sdisease(PD)(3).TheKeap1–Nrf2regulatorysystemisadouble-edgedswordforourbody.High-levelNrf2activityincreasescellprotectionandmakesthecellresistanttooxidativeandelectrophilicstresses.Therefore,Nrf2inducerscouldbeeffectiveforcancerchemoprevention.Ontheotherhand,elevatedNrf2activityisalsoadvantageousforcancercellsurvivalandevolution.Thus,Nrf2inhibitorscouldbeeffectiveforanticancertherapy.(4) |
Applications | DNA-protein,protein-proteininteractionresearchandassaydevelopment. |
Source | E.coli |
FusionTag | 6XHis |
PurificationMethod | FPLC |
Purity | ~95%asdeterminedbySDS-PAGE |
GeneID | 4780 |
Accession# | NP_006155,NM_006164 |
GeneName | Nuclearfactor(erythroid-derived2)-like2 |
GeneSymbol | NFE2L2 |
GeneSynonyms | NRF2 |
MW | 69.9kDa |
ProteinSequence | MMDLELPPPGLPSQQDMDLIDILWRQDIDLGVSREVFDFSQRRKEYELEKQKKLEKERQE QLQKEQEKAFFAQLQLDEETGEFLPIQPAQHIQSETSGSANYSQVAHIPKSDALYFDDCM QLLAQTFPFVDDNEVSSATFQSLVPDIPGHIESPVFIATNQAQSPETSVAQVAPVDLDGM QQDIEQVWEELLSIPELQCLNIENDKLVETTMVPSPEAKLTEVDNYHFYSSIPSMEKEVG NCSPHFLNAFEDSFSSILSTEDPNQLTVNSLNSDATVNTDFGDEFYSAFIAEPSISNSMP SPATLSHSLSELLNGPIDVSDLSLCKAFNQNHPESTAEFNDSDSGISLNTSPSVASPEHS VESSSYGDTLLGLSDSEVEELDSAPGSVKQNGPKTPVHSSGDMVQPLSPSQGQSTHVHDA QCENTPEKELPVSPGHRKTPFTKDKHSSRLEAHLTRDELRAKALHIPFPVEKIINLPVVD FNEMMSKEQFNEAQLALIRDIRRRGKNKVAAQNCRKRKLENIVELEQDLDHLKDEKEKLL KEKGENDKSLHLLKKQLSTLYLEVFSMLRDEDGKPYSPSEYSLQQTRDGNVFLVPKSKKP DVKKN |
StorageBuffer | 20mMTris-Cl(pH8.0),20%Glycerol,100mMKCl,1mMDTTand0.2mMEDTA |
Storage | -20to-80°C. |
Shipping | 4°Cordryice |
References | 1.IshiiT.,ItohK.,YamamotoM(2002)RolesofNrf2inactivationofantioxidantenzymegenesviaantioxidantresponsiveelements.MethodsEnzymol348:182–190. |
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IgM占血清免疫球蛋白总量的6%,主要存在血管内,是机体受抗原刺激后最先产生的抗体,起“先锋免疫”作用,具有很强的细胞毒活性和细胞溶解活性,由于IgM主要存在在血管内,是抗血管内感染的第一线抗体,对防止败血症的发生有重要作用。
IgG-主力抗体
IgG是初级免疫应答中最持久、最重要的抗体,它仅以单体形式存在。大多是抗菌性、抗毒性和抗病毒抗体属于IgG,它在抗感染中起到主力军作用,它能够促进单核巨噬细胞的吞噬作用(调理作用),中和细菌毒素的毒性(中和毒素)和病毒抗原结合使病毒失去感染宿主细胞的能力(中和病毒)。
IgA-局部抗体
按其免疫功能又分为血清型及分泌型两种。血清型IgA存在于血清中,其含量占总IgA的85%左右。血清型IgA虽有IgG和IgM的某些功能,但在血清中并不显示重要的免疫功能。分泌型IgA存在于分泌液中,如唾液、泪液、初乳、鼻和支气管分泌液、胃肠液、尿液、汗液等。分泌型IgA是机体粘膜局部抗感染免疫的主要抗体。故又称粘膜局部抗体。
抗原注射进入动物体内后,因为不是一个单独的分子,会随血液循环输送到各处,也就会接触不同的免疫细胞。有些还会被抗原提呈细胞再加工。所以最后的结果是很多个免疫细胞都会接触到。一个抗原分子也有很多抗原表位。每个表位理论上都有能力激活一个B细胞转化为浆细胞。所以体内最后针对该抗原的必定是多克隆
由于动物个体差异的存在,同一抗原免疫同一种系不同个体的动物,产生的抗体的效价有很大的差异.与动物的年龄和营养状况密切相关.免疫用的动物最好选择适龄的健康雄性动物,雌性动物特别是妊娠动物用于制备免疫抗体则非常不合适,有时甚至不产生抗体.
先饲养观察7天其实就是等于隔离检疫,观察一下兔子的身体状况和是否带有其他传染病,淘汰体质多病的个体,防止在免疫过程中死亡或免疫应答不灵敏而不产生抗体.
一个制造一种专一抗体的浆细胞进行培养,就可得到由单细胞经分裂增殖而形成细胞群,即单克隆。单克隆细胞将合成针对一种抗原决定簇的抗体,称为单克隆抗体。


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