重组新冠病毒 (BA.4/BA.5/BA.5.2) Spike RBD 蛋白 (His标签)

SARS-CoV-2 (BA.4) Spike RBD Protein (His Tag): 产品信息

纯度：> 95 % as determined by SDS-PAGE. > 95 % as determined by SEC-HPLC.
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 (BA.4) Spike RBD (YP_009724390.1, with mutations G339D, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, L452R, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H)(Arg319-Phe541) was expressed with a polyhistidine tag at the C-terminus. The mutations were identified in the SARS-CoV-2 variant (known as variant BA.4).
表达宿主：HEK293 Cells
种属：SARS-CoV-2
预测 N 端：Arg 319
分子量：The recombinant SARS-CoV-2 (BA.4) Spike RBD consists of 234 amino acids and predicts a molecular mass of 26.67 kDa. As a result of glycosylation, it migrates as an approximately 35.77 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.