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- 详细信息
- 文献和实验
- 技术资料
- 库存:
99
- 英文名:
SARS-CoV-2 (2019-nCoV) Spike RBD(E484K)-His Recombinant Protein, Biotinylated
- 保质期:
12个月
- 供应商:
北京义翘神州科技股份有限公司
- 保存条件:
-20℃ to -80℃
- 规格:
20 µg
纯度> 95 % as determined by SDS-PAGE.
内毒素< 1.0 EU per μg protein as determined by the LAL method.
生物活性Testing in progress
蛋白构建A DNA sequence encoding the SARS-CoV-2 (2019-nCoV) Spike RBD (YP_009724390.1, with mutation E484K) (Arg319-Phe541) was expressed with a polyhistidine tag at the C-terminus. The purified protein was biotinylated in vitro.
表达宿主HEK293 Cells
种属SARS-CoV-2
预测 N 端Ser
分子量The recombinant SARS-CoV-2 (2019-nCoV) Spike RBD consists of 235 amino acids and predicts a molecular mass of 26.6 kDa. As a result of glycosylation, it migrates as an approximately 34 kDa band in SDS-PAGE under reducing conditions.
缓冲液Lyophilized from sterile PBS, pH 7.4.
Please contact us for any concerns or special requirements.
Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization.
Please refer to the specific buffer information in the hard copy of CoA.
运输方式In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
稳定性 & 储存条件Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
复溶A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
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文献和实验日前,北京大学生命科学学院魏文胜课题组在 Cell 杂志上在线发表题为“Circular RNA Vaccines against SARS-CoV-2 and Emerging Variants”的研究论文。 魏文胜团队首先建立了体外高效制备高纯度环状 RNA 的技术平台,针对新型冠状病毒及其变异株,设计了编码新冠病毒刺突蛋白(Spike)受体结构域(RBD)的环状 RNA 疫苗。 该项研究中制备的针对新冠病毒德尔塔变异株的环状 RNA 疫苗(circRNARBD
特异性结合的单克隆抗体1。与Rho1D4抗体结合的表位可以作为针对膜蛋白的超高特异性纯化标记。通过基因修饰可在欲研究的目标(膜)蛋白C端加上Rho1D4标记。一旦加载上该序列,即可用装载有Rho1D4抗体的亲和基质去捕获目标蛋白,随后添加Rho1D4肽,通过竞争性结合基质抗体的方式来洗脱目标蛋白。采用这种方法,相比改变pH值等其他洗脱方式,更加地温和。图1:假设有3个跨膜域的膜蛋白。Rho1D4标签加到膜蛋白C端,它的序列是T-E-T-S-Q-V-A-P-A2) Rho1D4的历史Rho1D4的表位
.Cl(pH7.6) 50mmol/K MgCl2 50mmol/L二硫苏糖醇 500μg/ml牛血清白蛋白(组分V.Sigma产品)(可用可不用) 该缓训液应分装成小份,贮存于-20℃。 另外,再设立两个对照反应,其中含有(1)只有质粒载体;(2)只有外源DNA片段。如果外源DNA量不足,每个连接反应可用50-100ng质粒DNA,并尽可能多加外源DNA,同时保持连接反应体积不超过10μl。可用至少3种不同方法来测定T4噬菌体DNA连接酶的活性。大多数制造厂商(除New
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