IdeSProtease全称免疫球蛋白G降解酶(ImmunoglubulinG-degradingenzymeofStreptococcuspyogenes,IdeS),是由人类致病菌酿脓链球菌(Streptococcuspyogenes)产生并分泌至胞外的一种半胱氨酸水解酶。该蛋白酶具有极高的底物特异性,能识别IgG,在抗体下铰链区的特定位点进行酶切,使IgG水解为完整的F(ab’)2片段和Fc片段。IdeS可识别人源和其他多种动物来源的IgG,比如人、兔、猴、绵羊以及人动物嵌合IgG等。IdeS具有独特的底物选择性,可以作为工具酶应用于抗体类药物或抗体融合蛋白药物的结构表征分析。本产品利用大肠杆菌重组表达,纯度高,具有良好的酶切活性,是用于表征抗体、Fc融合蛋白和抗体-药物复合物的有价值的工具。产品信息规格2000U/5000U产品性质中文别名(Chinesesynonym)免疫球蛋白G降解酶英文别名(Englishsynonym)IdeSProtease来源(Source)大肠杆菌表达标签(label)N-terminalHisTag纯度(Purity)经SDS-PAGE及HPLC分析,纯度>95%分子量(Molecularweight)35.3kDa缓冲液组分(Buffer)50mM磷酸钠,150mMNaCl(pH6.6),50%glycerolSDF-1同工型与细胞表面上的CXCR4和CXCR7受体相互作用,也可以结合Syndecan-4。Recombinant Human TGF-alpha Protein
SARS-CoV-2, which causes the global pandemic coronavirus disease 2019 (Covid-19), belongs to a family of viruses known as coronaviruses that also include MERS‑CoV and SARS-CoV-1. Coronaviruses are commonly comprised of four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M) and Nucleocapsid protein (N). The SARS-CoV-2 S protein is a glycoprotein that mediates membrane fusion and viral entry. The S protein is homotrimeric, with each ~180-kDa monomer consisting of two subunits, S1 and S2 .The RBD of SARS-CoV-2 binds a metallopeptidase, angiotensin-converting enzyme 2 (ACE-2). Before binding to the ACE-2 receptor, structural analysis of the S1 trimer shows that only one of the three RBD domains is in the "up" conformation. This is an unstable and transient state that passes between trimeric subunits but is nevertheless an exposed state to be targeted for neutralizing antibody therapy. Polyclonal antibodies to the RBD of the SARS-CoV-2 protein have been shown to inhibit interaction with the ACE-2 receptor, confirming RBD as an attractive target for vaccinations or antiviral therapy. Recombinant Human SLPI Protein,hFc Tag(FGF-21)是FGF基因家族的成员。 基于其结构,FGF-21与FGF-19和-23一起进一步分为FGF的亚家族。
性能参数表达区间及表达系统(Source)CynomolgusCD27Ligand/CD70ProteinisexpressedfromHEK293withHistagattheN-terminal.ItcontainsGln39-Pro194.[Accession|G7PYU6-1]分子量大小(MolecularWeight)TheproteinhasapredictedMWof18.4kDa.Duetoglycosylation,theproteinmigratesto60-90kDabasedonTris-BisPAGEresult.(Endotoxin)Lessthan1EUperugbytheLALmethod.纯度(Purity)>95%asdeterminedbyTris-BisPAGE活性(Activity)ELISAData:ImmobilizedCynomolgusCD27Ligand,HisTagat2μg/ml(100μl/well)ontheplate.DoseresponsecurveforCynomolgus/RhesusmacaqueCD27,hFcTagwiththeEC50of70.8ng/mldeterminedbyELISA.制剂(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重构方法(Reconstitution)Centrifugetubesbeforeopening.Reconstitutingtoaconcentrationmorethan100μg/mlisrecommended.Dissolvethelyophilizedproteinindistilledwater.
Recombinant Human ACE2/ACEH Protein,hFc Tag性能参数,分子别名(Synonyms)ACE2;ACEH;ACE-2表达区间及表达系统(Source)HumanACE2/ACEHProteinisexpressedfromHEK293withhFctagattheC-Terminus.ItcontainsGln18-Ser740.[Accession|Q9BYF1-1]分子量大小(MolecularWeight)TheproteinhasapredictedMWof109.2kDa.Duetoglycosylation,theproteinmigratesto115-130kDabasedonSDS-PAGEresult.Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedbySDS-PAGEandHPLC.活性(Activity)ELISAData:ImmobilizedSARS-COV-2SpikeS(B.1.1.529/Omicron)Trimer,HisTagat1μg/ml(100μl/well)ontheplate.DoseresponsecurveforHumanACE2,hFcTagwiththeEC50of13.7ng/mldeterminedbyELISA.制剂(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重构方法(Reconstitution)Centrifugethetubebeforeopening.Reconstitutingtoaconcentrationmorethan100μg/mlisrecommended.Dissolvethelyophilizedproteinindistilledwater.成纤维细胞生长因子18(FGF-18)是20 kDa蛋白,在骨骼发育和骨稳态中起着重要作用。
ERBB3,又称HH3(人表皮生长因子受体3),是一种I型膜糖蛋白,是酪氨酸激酶受体ERBC家族的成员。ERBP家族成员作为表皮生长因子(LU)家族的生长因子的受体。在ERBP家庭成员中,因为它含有一个缺陷的激酶域。ERBB3在角化细胞、黑色素细胞、骨骼肌细胞、成肌细胞和雪旺细胞中都有表达。单体ERbb3是一种低亲和性的受体。ERBB3与ERBB2的异聚反应形成高亲和性受体复合物。与此相反,ERBB3同向聚合或异向聚合形成了一个低亲和性的结合物。因为ERBB3含有一个有缺陷的激酶域,ERBB2的激酶域负责通过异二重瓣受体启动酪氨酸磷酸化信号。研究发现,ERBB3细胞质区内的三个离散氨基酸信号对ERBB2的转导至关重要。ERBB3的细胞质域也包含6个一致的结合主题,用于调节P85磷酸酶3激酶(PI3K)的HS2领域,以及一个丰富的一致的结合主题。ERBB3的细胞质域也包含6个一致的结合主题,用于调节P85磷酸酶3激酶(PI3K)的HS2领域,以及一个丰富的一致的结合主题。ERBB3的细胞质域也包含6个一致的结合主题,用于调节P85磷酸酶3激酶(PI3K)的HS2领域,以及一个丰富的一致的结合主题。表达区间及表达系统重组的人HR3/ERBB3蛋白表达自于C-端的HK293细胞和AVI标记。里面有血清20-Thr643。分子量大约71.6凝血酶是由大小分别为31 KD和6 KD的两条肽链通过二硫键组成的一种丝氨酸蛋白水解酶。Recombinant Human TGF-alpha Protein
泛素化反应可以修饰蛋白质,调节蛋白质降解。泛素化还影响蛋白质体事件,如蛋白质定位、活性和功能。Recombinant Human TGF-alpha Protein
Recombinant Biotinylated Human MSLN/Mesothelin Protein,hFc-Avi Tag分子别名(Synonyms)Mesothelin;CAK1;MSLN;MPFSMRP表达区间及表达系统(Source)BiotinylatedHumanMSLN/MesothelinProteinisexpressedfromHEK293withhFctagandAvitagattheC-Terminus.ItcontainsGlu296-Gly580.[Accession|Q13421-2]分子量大小(MolecularWeight)TheproteinhasapredictedMWof61.1kDa.Duetoglycosylation,theproteinmigratesto70-80kDabasedonSDS-PAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedbySDS-PAGEandHPLC.活性(Activity)ELISAData:ImmobilizedAnti-MSLNAntibody,hFcTagat1μg/ml(100μl/well)ontheplate.DoseresponsecurveforBiotinylatedHumanMSLN,hFcTagwiththeEC50of18.4ng/mldeterminedbyELISA.Recombinant Human TGF-alpha Protein
不同的DNA聚合酶在PCR中的应用差异主要体现在以下几个方面:1.**TaqDNAPolymerase**:是常用的DNA聚合酶之一,来源于Thermusaquaticus,具有较高的热稳定性及扩增效率。但它缺乏3'-5'核酸外切酶活性,即没有校正功能,因此其保真性相对较低。Taq酶适合扩增较短的DNA片段(通常不超过3kb),且在PCR产物的3'端带A碱基,可直接用于TA克隆。2.**PfuDNAPolymerase**:来源于Pyrococcusfuriosus,是一种高保真聚合酶,具有3'-5'外切酶活性,可以修复并纠正PCR反应中的腺嘌呤碱基误配,有效防止误差累积。Pfu聚合酶适用于需...