性能參數(shù)表達區(qū)間及表達系統(tǒng)(Source)CynomolgusCD27Ligand/CD70ProteinisexpressedfromHEK293withHistagattheN-terminal.ItcontainsGln39-Pro194.[Accession|G7PYU6-1]分子量大小(MolecularWeight)TheproteinhasapredictedMWof18.4kDa.Duetoglycosylation,theproteinmigratesto60-90kDabasedonTris-BisPAGEresult.(Endotoxin)Lessthan1EUperugbytheLALmethod.純度(Purity)>95%asdeterminedbyTris-BisPAGE活性(Activity)ELISAData:ImmobilizedCynomolgusCD27Ligand,HisTagat2μg/ml(100μl/well)ontheplate.DoseresponsecurveforCynomolgus/RhesusmacaqueCD27,hFcTagwiththeEC50of70.8ng/mldeterminedbyELISA.制劑(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重構(gòu)方法(Reconstitution)Centrifugetubesbeforeopening.Reconstitutingtoaconcentrationmorethan100μg/mlisrecommended.Dissolvethelyophilizedproteinindistilledwater.腸激酶能夠特異性識別并切割含有Aspartate-Aspartate-Aspartate-Lysine (DDDK) 序列的蛋白質(zhì)。Recombinant Human BMP-7 Protein
CD40,alsoknownasTNFRSF5,isa45-50kDatypeItransmembraneglycoproteinmemberoftheTNFreceptorsuperfamily.MaturehumanCD40consistsofa173aminoacid(aa)extracellulardomain,atransmembranedomain,anda62aacytoplasmicdomain.CD40servesmultiplefunctionsinbothhematopoieticandepithelialcancersandisatargetfortumorimmunotherapy.DysregulationofCD40/CD40LigandexpressionandinteractionscontributestotheimmunedeficiencyassociatedwithHIVinfectionandAIDS.Itisalsoimplicatedinthepathologyofmultiplecardiovasculardiseasesincludingatherosclerosis,atherothrombosis,andrestenosis.產(chǎn)品性質(zhì)別名CD40;CD40Lreceptor;TNFRSF5;CD40antigen;CD40molecule;CDw40;MGC9013;UniprotNo.P25942表達區(qū)間及表達系統(tǒng)RecombinantBiotinylatedHumanCD40/TNFRSF5ProteinisexpressedfromHEK293CellswithHistagandAvitagattheC-terminal.ItcontainsGlu21-Arg193.分子量Approximately22.1kDa.Duetoglycosylation,theproteinmigratesto35-40kDabasedonTris-BisPAGEresult.純度>95%asdeterminedbySDS-PAGEandHPLC.活性Recombinant Human CD30/TNFRSF8(His-Avi Tag)C5AR與其配體C5a結(jié)合后,可以激發(fā)多種免疫細胞,促進炎癥反應(yīng)和細胞趨化。
SARS-CoV-2,whichcausestheglobalpandemiccoronavirusdisease2019(Covid-19),belongstoafamilyofvirusesknownascoronaviruses.TheSARS-CoV-2Sproteinisaglycoproteinthatmediatesmembranefusionandviralentry.TheRBDofSARS-CoV-2bindsametallopeptidase,angiotensin-convertingenzyme2(ACE-2).SeveralemergingSARS-CoV-2genomeshavebeenidentifiedincludingtheOmicron,orB.1.1.529,variant.FirstidentifiedinNovember2021inSouthAfrica,theOmicronvariantquicklybecamethepredominantSARS-CoV-2variantandisconsideredavariantofconcern(VOC).TheOmicronvariantcontains15mutationsinRBDdomainthatpotentiallyaffectviralfitnessandtransmissibility.ThemajorityofthemutationsareinvolvedinACE-2bindingandOmicronbindsACE-2withgreateraffinity,potentiallyexplainingitsincreasedtransmissibility.Severalofthesemutationsarealsoidentifiedinfacilitatingimmuneescapeandreducingneutralizationactivitytoseveralmonoclonalantibodies.
基因工程與抗體技術(shù)通過基因工程方法,可以構(gòu)建重組3C蛋白酶,并利用其切割特異性進行活性驗證。此外,通過動物實驗獲得3C蛋白酶抗體,可以探索利用抗體技術(shù)抑制3C蛋白酶活性,進而達到抑制病毒復(fù)制的目的4。研究進展與挑戰(zhàn)3C蛋白酶及其抑制劑的研究進展迅速,但仍面臨挑戰(zhàn)。例如,需要深入了解不同耐藥突變對3CLpro自身活性的影響,以及不同抑制劑之間的交叉耐藥風(fēng)險。這些研究對于開發(fā)新的廣譜抗病毒藥物具有重要意義38。結(jié)論3C蛋白酶是一類在RNA病毒復(fù)制中發(fā)揮關(guān)鍵作用的酶,是抗病毒藥物開發(fā)的重要靶點。深入研究3C蛋白酶的結(jié)構(gòu)、功能以及耐藥機制,對于開發(fā)有效的抗病毒藥物和方法具有重要意義。隨著科學(xué)技術(shù)的不斷進步,3C蛋白酶的研究將為人類戰(zhàn)勝病毒性疾病提供更多的科學(xué)依據(jù)策略。全長跨膜蛋白CB1,即受體1(Cannabinoid Receptor 1),是一種G蛋白偶聯(lián)受體(GPCR)。
IdeSProtease全稱免疫球蛋白G降解酶,酶活(Enzymeactivity)40U/μL酶活定義(UnitDefinition)在37℃條件下,反應(yīng)30min,剪切>95%的1μg重組單克隆IgG所需要的酶量定義為一個活性單位。儲存條件-25~-15℃保存,有效期1年。使用方法1.在消化液中加入適量IgG(加至5mg);2.在IgG樣本中加入IdeS蛋白酶(每1μgIgG加入1個單位的IdeS);3.將樣品置于37℃孵育30-60min。IdeS蛋白酶在中性pH或接近中性pH的緩沖中活性強。推薦反應(yīng)緩沖是50mM磷酸鈉,150mMNaCl(pH6.6),多數(shù)常見的生物緩沖也適用,比如Tris或PBS;注意:不在此pH范圍(例如乙酸鹽緩沖液)的緩沖也可能適用,但是孵育時間或酶量需要根據(jù)實際情況進行優(yōu)化。注意事項1.IdeS不能識別切割小鼠IgG1/IgG2b,大鼠、豬、牛和山羊IgG,對小鼠IgG2a和IgG3具有中等酶切活性,酶切小鼠IgG2a和IgG3建議增加IdeS的用量(推薦用量為正常用量的5-10倍)。2.IdeS不能切割非IgG亞型的單抗分子,包括IgA、IgM、IgD和IgE。透明質(zhì)酸(Hyaluronic Acid,簡稱HA)是一種存在于人體和動物組織中的天然高分子多糖,稱為糖醛酸或玻尿酸。Recombinant Cynomolgus CD98 Protein,His Tag
在某些疾病中,特定蛋白質(zhì)的泛素化水平可能發(fā)生變化,因此,泛素化蛋白質(zhì)可以作為疾病的生物標(biāo)志物。Recombinant Human BMP-7 Protein
Coronavirusesarecommonlycomprisedoffourstructuralproteins:Spikeprotein(S),Envelopeprotein(E),Membraneprotein(M)andNucleocapsidprotein(N).TheSARS-CoV-2Sproteinisaglycoproteinthatmediatesmembranefusionandviralentry.TheSproteinishomotrimeric,witheach~180-kDamonomerconsistingoftwosubunits,S1andS2.TheRBDofSARS-CoV-2bindsametallopeptidase,angiotensin-convertingenzyme2(ACE-2).產(chǎn)品性質(zhì)別名SproteinRBD;SglycoproteinRBD;SpikeproteinRBDAccessionQHD43416.1表達區(qū)間及表達系統(tǒng)RecombinantSARS-CoV-2SpikeRBD(OmicronBA.4/BA.5/BA.5.1.3/BA.5.2)ProteinisexpressedfromExpi293withHistagattheC-terminal.ItcontainsArg319-Phe541(G339D,S371F,S373P,S375F,T376A,D405N,R408S,K417N,N440K,L452R,S477N,T478K,E484A,F486V,Q498R,N501Y,Y505H).Recombinant Human BMP-7 Protein