EC 3.2.1.41 CAZY Family: GH13 From Klebsiella planticola. Electrophoretically homogeneous. In 3.2 M ammonium sulphate. Specific activity: 29 U/mg (40°C, pH 5.0, 1% pullulan). Contaminants: α-glucosidase and α-amylase < 0.001%. Stable at 4°C for > 4 years. Recommended pullulanase for research on starch structure.