Fig. 8From: Screening and identification of an Enterobacter ludwigii strain expressing an active β-xylosidaseNonlinear regression fitting to the Michaelis–Menten equation for hydrolysis rates versus pNPX concentrations. Black triangle: His-Xyl62; black square: Xyl62-His. The figure exhibited the kinetic studies of His-Xyl62 and Xyl62-His using pNPX as substrateBack to article page