Recombinant Human TENM2 Protein

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.Kex2不能识别和切割单一碱性氨基酸即精氨酸或赖氨酸的羧基端肽键。Recombinant Human TENM2 Protein,His Tag

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 CD300A Protein,Avi TagCX3CL1用作粘附分子，而两种形式都是表达CX3CR1的靶细胞的化学吸引力。

泛素化是通过三个酶促步骤实现的。在ATP依赖的过程中，泛素酶(E1)催化与泛素形成活性硫酯键，然后转移到泛素载体蛋白的活性位点半胱氨酸(E2)。泛素级联对特定底物蛋白的选择性依赖于E2结合酶(细胞中包含的相对较少)和泛素-蛋白连接酶(E3)之间的相互作用，迄今为止已经鉴定出600多种这种酶。E3s是一个大的，多样化的蛋白质组，其特征是几个确定的基序之一。这些包括HECT(与e6相关蛋白c端同源)，RING(真正有趣的新基因)或U-box(没有Zn2+结合配体的完整补充的修饰的RING基序)结构域。而HECT E3s在泛素化过程中具有直接的催化作用，RING和U-box E3s促进蛋白质泛素化。 后两种E3类型充当适配器类分子。 它们使E2和底物足够接近，从而促进底物的泛素化。虽然许多RING-type e3，如MDM2和c-Cbl，可以单独发挥作用，但其他一些是作为更大的多蛋白复合体的组成部分，如后期促进复合体。综上所述，这些多面的特性和相互作用使E3s能够利用泛素-蛋白酶体系统，在真核生物的所有细胞中提供一种强大而具体的蛋白质机制。该筛选了11种常用E2结合酶，可以筛选具有E3连接酶活性的蛋白所匹配的E2酶.

Cas9核酸酶是一种引导RNA引导的核酸内切酶，可以催化双链DNA的裂解。这种靶向核酸酶是一种高精度的基因组编辑的有力工具。Cas9蛋白与CRISPR/Cas9系统的引导RNA（gRNA）成分形成一个非常稳定的核糖白（RNP）复合物。Cas9RNP复合物可以在进入细胞后，通过添加一个N端核定位信号（NLS），增加入核效率。YEASEN开发的NLS-Cas9核酸酶在蛋白的N端包含一个核定位序列（NLS），以增加入核切割效率。产品特点如下：无DNA：没有外部DNA添加。安全性好：野生型Cas9蛋白，无标签。可应用于：通过体外DNA切割筛选高效和特异性靶向gRNA。产品信息货号11366ES60/11366ES76规格100μg/500μg来源重组Cas9来源于大肠杆菌物种化脓性链球菌标签无分子量160KDa浓度10mg/mL（50μg）；10mg/mL（100μg）成熟的人IL-28A是一种约22-25 kDa蛋白，与小鼠和大鼠IL-28A共享66％的氨基酸序列身份，并显示跨物种活性。

Angiotensin I Converting Enzyme (ACE-2), also called ACEH (ACE homologue), is a dimeric, zinc-dependent metalloprotease of the ACE family that also includes somatic and germinal ACE. ACE-2 mRNA is found at high levels in heart, testis, and kidney and at lower levels in a wide variety of tissues. ACE-2 is the SARS-CoV and SARS-CoV2 Spike protein receptor in vivo, functions catalytically as a carboxypeptidase to cleave several substrates including angiotensins I and II, and acts as a partner for B0AT1-family amino acid transporters. Through these functions, ACE-2 has been shown to be involved in several diseases including SARS, COVID19, acute lung injury, heart disease, liver and lung fibrosis, inflammatory lung disease, and cardiopulmonary disease . Full length ACE-2 protein includes an extracellular region composed of a single N-terminal peptidase domain and C-terminal collectrin-like domain (CLD), a transmembrane domain, and a short cytoplasmic tail. The N-terminal peptidase region is required for binding to SARS-CoV and SARS-CoV2 spike proteins, while the CLD contains a region that promotes dimerization and association with amino acid 还具有抑制髓样细胞增殖的能力，髓样细胞增殖是Eotaxin不共有的生物学功能。Recombinant Human CSPG5 Protein,His Tag

SDF-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 TENM2 Protein,His Tag

糖苷酶 F (PNGase F)酶活定义（UnitDefinition）1个酶活力单位指在10μL的反应体系中，37℃条件下1小时从10μg变性RNaseB中除去超过95%的碳水化合物所需要的酶量。储存条件-25~-15℃保存，有效期1年。使用方法1、变性条件下蛋白质去糖基化：1）在水中加入1μLBuffer1和目标糖蛋白（1-20μg），至终体积10μL；2）100℃温度下煮沸10min使其变性，冰上冷却，离心10秒；加入2μL的Buffer2、2μL的10％NP-40、6μL去离子水，总反应体积20μL；加入1-2μL的PNGase，轻轻混匀。在37℃孵育1-3h。2、非变性条件下蛋白质去糖基化：1）在水中加入2μL的Buffer2和目标糖蛋白（1-20μg）至体积为20μL。2）加入2~5μL的PNGaseF,轻轻混匀。3）37°C孵育4-24h。注意：在变性条件下大多数底物能够更好的去糖基化，在非变性条件下可能需要增加PNGaseF的量和延长孵育时间。注意事项1.PNGaseF建议搭配我司提供的配套缓冲液使用，按我司说明书建议的操作量配套缓冲液足够。如您由于使用体系造成配套缓冲液不足，可咨询当地销售进行购买Recombinant Human TENM2 Protein,His Tag