Cat#:RP-133A;Product Name:Recombinant Influenza A H1N1 Hemagglutinin Protein (HA1 Subunit) (His Tag);Synonym:HA1;Description:A DNA sequence encoding an N-terminal segment (Met 1-Arg 343) of Influenza A virus (A/Brisbane/59/2007 (H1N1)) (ACA28844.1) HA, termed as HA1 subunit, was fused with a polyhistidine tag at the C-terminus.;Source:Human Cells;Predicted N Terminal:Asp 18;Molecular Characterization:Recombinant HA1 subunit of Influenza A virus (A/Brisbane/59/2007 (H1N1)) hemagglutinin consists of 337 amino acids and has a calculated molecular mass of 37.7 kDa. As a result of glycosylation, the recombinant protein migrates as an approximately 55-60 kD;Purity:Greater than 98 % 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 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℃).;