Kinetic characterization of OsttaDSP.

A) Effect of pH on the activity of recombinant OsttaDSP. Activity was assayed with pNPP (filled triangles/▲) or amylopectin (filled circles/●) as a substrate using 100 mM Sodium Acetate, 50 mMBis-Tris and 50 mM Tris as a buffer. Buffer pH values were adjusted to the values shown in the graphic and used to assay the enzyme. All data are the means ± SD of 3 independent experiments. B) pNPP saturation plot for OsttaDSP determined at pH 7. C) Amylopectin saturation plot for OsttaDSP determined at pH 7.5.