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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 S1(T20N, D614G)-His Recombinant Protein
- 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:
100 µg
纯度> 90 % 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 S1(T20N, D614G)-His Recombinant Protein (YP_009724390.1) (Met1-Arg685(T20N, D614G)) was expressed with a polyhistidine tag at the C-terminus.
表达宿主HEK293 Cells
种属SARS-CoV-2
预测 N 端Val 16
分子量The recombinant SARS-CoV-2 (2019-nCoV) Spike S1(T20N, D614G)-His Recombinant Protein consists of 681 amino acids and predicts a molecular mass of 76.4 kDa. As a result of glycosylation, it migrates as an approximately 113.5 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
收集病毒。按步骤1收集细胞并准备病毒上清。通过Western blot和/或PCR鉴定重组腺病毒产生。 4、PCR鉴定重组病毒。取5μl病毒上清加入10μl蛋白酶K,55℃孵育1hr,再煮沸5min,离心后取1-2μl作PCR。 五、重组病毒扩增,纯化 1、75cm2方瓶中接种293细胞,至密度达到90%,加入适量病毒上清感染细胞。3-4d后,细胞几乎变圆,且有一半细胞漂浮,则收集所有细胞。约500g转速离心,弃上清。 2、以灭菌PBS重悬沉淀,反复冻融4次。4℃下7000g离心5min
目的基因与载体的重组(重组体的构建)程序如下:(1)质粒DNA 的分离纯化。一般含有单个目的基因的DNA 片段,即使进入了宿主细胞也不能进行增殖。通常它需要同适当的能自我复制的DNA 分子(例如质粒、噬菌体DNA 等)结合后,才能在通过转化或其他途径导入宿主细胞,像正常质粒或病毒一样增殖和易于检测。分离质粒载体DNA 有许多方法,但其共同步骤是先用溶菌酶处理含有质粒载体的宿主菌培养物,以除去其细胞壁,然后加入去污剂(例如SDS),使其发生温和的溶菌作用。这样质粒DNA 、多聚核糖体、可溶性蛋白
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