Cat#:RP-750HAT;Product Name:Recombinant Human CSTB Protein;Synonym:Cystatin-B;Description:Recombinant CSTB, fused with His tag, was produced in E.coli. This recombinant protein was purified using our unique chromatography techniques.;Source:E.coli;AA Sequence:1-98aa;Molecular Characterization:13 kDa;Purity:Greater than 95% by SDS-PAGE;Endotoxin:< 1.0 EU per ug of protein as determined by LAL method.;Bioactivity:The IC50 value is < 3.0nM. The inhibitory function of Cystatin B on protease activity of papain was measured by a fluorometric assay using Z-FR-AMC at pH 7.5 at 25C.;Formulation:Liquid Solution;Stability:Recombinant Human CSTB Protein was stable up to 1 year from date of receipt at -70℃;Concentration:1mg/mL;Storage Buffer:Recombinant Human CSTB protein was supplied in 20 mM Tris-HCl buffer (pH8.0) containing 50mM NaCl;Storage:Recombinant Human CSTB Protein can be stored at +4℃for 1-2 weeks. It is recommended that the recombinant protein be aliquoted for optimal storage at -20 or -70℃. Please avoid repeated freeze-thaw cycles.;Usage:For Lab Research Use Only;