Recombinant Strep-Tactin, r-ST

Product Information Product name: Recombinant Strep Tactin, r-ST Specifications: 10 mg, 100 mg, 500 mg Product form: Freeze dried powder, with a solution of 5mM PB (2.5mM Na2HPO4, 2.5mM NaH2PO4, pH6.8) before freeze-drying Molecular weight: subunit monomer 13.3 kDa; Tetramer 53.2 kDa Isoelectric point: 8.12 Theoretical activity: 18.3 U/mg protein (r-ST: Biotin=1:4 (mol: mol)) Determination of activity: ≥ 16 U/mg protein (Green modified method) Purity: ≥ 95% (SDS-PAGE