Cat#:RP-243A;Product Name:Recombinant Influenza A H1N1 Hemagglutinin Protein (HA1 Subunit) (His Tag);Synonym:Hemagglutinin, HA1;Description:A DNA sequence encoding the Influenza A virus (A/USSR/90/1977(H1N1)) hemagglutinin (P03453) (Met1-Arg344), termed as HA1, was expressed with a polyhistidine tag at the C-terminus.;Source:Human Cells;Predicted N Terminal:Asp 18;Molecular Characterization:The recombinant HA1 subunit of the Influenza A virus hemagglutinin (A/USSR/90/1977(H1N1)) consists 338 amino acids and predicts a molecular mass of 38.3 kDa.;Purity:Greater than 90 % as determined by SDS-PAGE.;Endotoxin:< 1.0 EU per ug protein as determined by the LAL method.;Bioactivity:Please contact us for detailed information;Formulation:Lyophilized from sterile PBS, pH 7.4.;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℃).;