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分子别名（Synonym）
Spike,S protein RBD,Spike glycoprotein Receptor-binding domain,S glycoprotein RBD,Spike protein RBD
表达区间及表达系统（Source）
SARS-CoV-2 Spike RBD Protein, His Tag (BA.2.86/V483del/USA) (SPD-C5247) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (I332V,G339H,K356T,S371F,S373P,S375F,T376A,R403K,D405N,R408S,K417N,N440K,V445H,G446S,N450D,L452W,N460K,S477N,T478K,N481K,V483del,E484K,F486P,Q498R,N501Y,Y505H)). The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BA.2.86/V483del/USA).
Predicted N-terminus: Arg 319
Request for sequence蛋白结构（Molecular Characterization）
This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 26.7 kDa. The protein migrates as 38-43 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
偶联（Conjugate）
Unconjugated
内毒素（Endotoxin）
Less than 1.0 EU per μg by the LAL method.
纯度（Purity）
>90% as determined by SDS-PAGE.
制剂（Formulation）
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
重构方法（Reconstitution）
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
存储（Storage）
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.
质量管理控制体系（QMS）
数据展示
电泳（SDS-PAGE）
SARS-CoV-2 Spike RBD Protein, His Tag (BA.2.86/V483del/USA) on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 90% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of SARS-CoV-2 Spike RBD Protein, His Tag (BA.2.86/V483del/USA) (Cat. No. SPD-C5247) is more than 85% and the molecular weight of this protein is around 35-45 kDa verified by SEC-MALS.
Report
活性（Bioactivity）-ELISA
Immobilized Human ACE2, Fc Tag (Cat. No. AC2-H5257) at 5 μg/mL (100 μL/well) can bind SARS-CoV-2 Spike RBD Protein, His Tag (BA.2.86/V483del/USA) (Cat. No. SPD-C5247) with a linear range of 1.953-31.25 ng/mL (QC tested).
Protocol
Immobilized SARS-CoV-2 Spike RBD Protein, His Tag (BA.2.86/V483del/USA) (Cat. No. SPD-C5247) at 1 μg/mL (100 μL/well) can bind Human ACE2, Fc Tag (Cat. No. AC2-H5257) with a linear range of 0.122-3.906 ng/mL (Routinely tested).
Protocol
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