Deoxyribonuclease from beef pancreas, DNase I, was first crystallized by Kunitz. It is an endonuclease which splits phosphodiester linkages, preferentially adjacent to a pyrimidine nucleotide yielding 5'-phosphate terminated polynucleotides with a free hydroxyl group on position 3'. The…

Catalase is used for the removal of peroxides, the generation of oxygen. One unit decomposes one µmole of hydrogen peroxide per minute at 25°C, pH 7.0.

The number of grams of soluble starch dextrinized in the presence of excess B-amylase per hour at 40°C, pH 5.0.