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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.  重组肠激酶为采用重组大肠杆菌分泌表达的高纯度、高活性、高特异的牛肠激酶,不含其他蛋白酶。Recombinant Mouse MCP-2/CCL8

Recombinant Mouse MCP-2/CCL8,标准物质

Recombinant Biotinylated Human HBV (HLA-A*02:01) Protein,His-Avi Tag性能参数表达区间及表达系统(Source)RecombinantBiotinylatedHumanHBV(HLA-A*02:01)ProteinisexpressedfromHEK293withHistagandAvitagattheC-terminalItcontainsGly25-Thr305(HLA-A*02:01),Ile21-Met119(B2M)andFLLTRILTIpeptide.[Accession|A0A140T913(HLA-A*02:01)&P61769(B2M)&FLLTRILTIpeptide]分子量大小(MolecularWeight)TheproteinhasapredictedMWof50.5kDa.Duetoglycosylation,theproteinmigratesto52-62kDabasedonTris-BisPAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedby>95%asdeterminedbyHPLC制剂(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重构方法(Reconstitution)Centrifugetubesbeforeopening.Reconstitutingtoaconcentrationmorethan100μg/mlisrecommended.Dissolvethelyophilizedproteinindistilledwater.Recombinant Mouse Kremen-2 Protein,His TagSUMO蛋白酶识别完整的含有100个氨基酸的SUMO标签蛋白,并能高效地把SUMO从融合蛋白上切割下来。

Recombinant Mouse MCP-2/CCL8,标准物质

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.

Recombinant Biotinylated Human KIR2DL1 Protein,His-Avi Tag性能参数分子别名(Synonyms)CD158A;CD158Ankat1;cl-42表达区间及表达系统(Source)BiotinylatedHumanKIR2DL1ProteinisexpressedfromHEK293withHistagandAvitagattheC-Terminus.ItcontainsHis22-Arg242.[Accession|P43626]分子量大小(MolecularWeight)TheproteinhasapredictedMWof27.1kDa.Duetoglycosylation,theproteinmigratesto48-60kDabasedonSDS-PAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedbySDS-PAGEandHPLC.制剂(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重构方法(Reconstitution)Centrifugethetubebeforeopening.Reconstitutingtoaconcentrationmorethan100μg/mlisrecommended.Dissolvethelyophilizedproteinindistilledwater.甲磺酸达比加群酯是一种抗凝药,通过竞争结合凝血酶的纤维蛋白特异结合位点,从而抑制血栓的形成。

Recombinant Mouse MCP-2/CCL8,标准物质

Recombinant Biotinylated Human AFP (HLA-A*02:03) Protein,His-Avi Tag性能参数表达区间及表达系统(Source)RecombinantBiotinylatedHumanAFP(HLA-A*02:03)ProteinisexpressedfromHEK293withHistagandAvitagattheC-terminal..ItcontainsGly25-Thr305(HLA-A*02:03),Ile21-Met119(B2M)andFMNKFIYEIpeptide.[Accession|AAA03604.1(HLA-A*02:03)&P61769(B2M)&FMNKFIYEI]分子量大小(MolecularWeight)TheproteinhasapredictedMWof50.70kDa.Duetoglycosylation,theproteinmigratesto53-60kDabasedonTris-BisPAGEresult.(Endotoxin)Lessthan1EUperμgbytheLALmethod.纯度(Purity)>95%asdeterminedby>95%asdeterminedbyHPLC制剂(Formulation)Lyophilizedfrom0.22μmfilteredsolutioninPBS(pH7.4).Normally8%trehaloseisaddedasprotectantbeforelyophilization.重构方法(Reconstitution)Centrifugetubesbeforeopening.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。Recombinant Mouse MCP-2/CCL8

然而,在肝脏中,IL-28A诱导的Th1细胞因子反应有助于T细胞介导的肝炎的炎症。Recombinant Mouse MCP-2/CCL8

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71.6Recombinant Mouse MCP-2/CCL8

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甲醇代谢通路是毕赤酵母更标志性的生理特征,也是其实现外源蛋白可控表达的关键机制,只在甲醇诱导条件下特异性启动。自然状态下,毕赤酵母优先利用葡萄糖、甘油等常规碳源,此时甲醇代谢相关基因完全沉默,避免能量浪费。当培养基中只留存甲醇作为碳源时,菌株会快速启动关键代谢基因,开启甲醇分解代谢过程。其代谢关键流程为:甲醇在醇氧化酶作用下生成甲醛,再经脱氢酶催化生成甲酸,更终分解为二氧化碳与水,同时为菌体生长与蛋白合成提供能量。该通路中的AOX1、AOX2启动子具备极强的甲醇诱导特异性,且表达调控严谨,无甲醇时几乎无本底表达,添加甲醇后可快速启动下游基因高效转录。科研人员利用这一特性,将外源目的基因与AOX...

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