Cat#:RP-3229AT;Product Name:Recombinant E.coli Beta-lactamase Protein;Description:Recombinant E.coli beta-lactamase protein, fused with His tag at N Terminus, was produced in E.coli. This recombinant protein was purified using our unique chromatography.;Source:E.coli;AA Sequence:20-378aa;Molecular Characterization:41.8 kDa;Purity:Greater than 95% by SDS-PAGE;Bioactivity:Specific activity is >700 units/mg, in which One unit will hydrolyze 1.0umole of Nitrocefin per minute at pH 7.0 at 37C.;Formulation:Liquid Solution;Stability:Recombinant E.coli Beta-lactamase Protein was stable up to 1 year from date of receipt at -70℃;Concentration:1mg/mL;Storage Buffer:Recombinant E.coli Beta-lactamase protein was supplied in 20mM Tris-HCl buffer (pH8.0) containing 10% glycerol;Storage:Recombinant E.coli Beta-lactamase 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;