Cat#:RP-271A;Product Name:Recombinant HIV-1 gp120 Protein (group M, subtype CRF07_BC) (His Tag);Description:A DNA sequence encoding the HIV-1 envelope glycoprotein gp160 (AFM77980.1) extracellular domain (Ala 29-Glu 503), termed as gp120, was fused with a polyhistidine tag at the C-terminus.;Source:Human Cells;Predicted N Terminal:Ala 29;Molecular Characterization:The recombinant HIV-1 gp120 consists of 486 amino acids after removal of the signal peptide and has a predicted molecular mass of 54.6 kDa. The apparent molecular mass of the recombinant protein is approximately 80-100 kDa in SDS-PAGE under reducing condi;Purity:Greater than 95 % 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℃).;