   3.4.16.5 | the denatured His-tagged carboxypeptidase propeptide is refolded by dilution 1:60 into the renaturation buffer, 50 mM Tris-HCl containing 0.5 M NaCl and 3 mM EDTA, pH 8.0. The denatured carboxypeptidase is refolded by dilution 1:60 into the reanturation buffer containing containing His-tagged carboxypeptidase propeptide at various concentrations. Increasing the molar ratio of His-tagged carboxypeptidase propeptide to carboxypeptidase results in an increase in the carboxypeptidase refolding yield, indicating that the His-tagged carboxypeptidase propeptide plays a chaperone-like role in in vitro folding of the carboxypeptidase. When refolding is carried out in the presence of 10 molar equivalent His-tagged carboxypeptidase propeptide the specific activity, N-(2-furanacryloyl)-Phe-Phe hydrolysis activity per mg of protein, is 63% of that of the native enzyme |
647225 |
