Cat#:RP-251A;Product Name:Recombinant MERS-CoV (NCoV / Novel coronavirus) Spike Protein (ECD, aa 1-1297, His Tag);Synonym:S;Description:A DNA sequence encoding the extracellular domain of spike protein (Human betacoronavirus 2c EMC/2012)( AFS88936.1) (Met1-Trp1297) was fused with a polyhistidine tag at the C-terminus.;Source:Baculovirus-Insect Cells;Predicted N Terminal:Tyr 18;Molecular Characterization:The recombinant extracellular domain of spike protein (Human betacoronavirus 2c EMC/2012) comprises 1289 amino acids and has a predicted molecular mass of 142.2 kDa. It migrates as an approximately 157 kDa band in SDS-PAGE under reducing conditions.;Purity:Greater than 85 % as determined by SDS-PAGE;Endotoxin:< 1.0 EU per ug of the protein as determined by the LAL method;Bioactivity:Please contact us for detailed information;Formulation:Lyophilized from sterile 20mM Tris, 500mM Nacl, pH 7.4, 10% glycerol.;Stability:Recombinant Proteins are stable for up to 1 year from date of receipt at -70℃;Reconstitution:Please see related COA for specific instructions.;Storage:Avoid repeated freeze-thaw cycles. In lyophilized state for 1 year (4-8℃); Upon reconstitution under sterile conditions for 2 weeks (4-8℃) or 3 months (-20℃ to -70℃).;