An Improved Method of Crystallization of Beef Liver Catalase
نویسنده
چکیده
' .On the way of purification of beef liver arginase, Kitagawa and author') obtained a crystalline protein and ascertained it to be identical with the crystalline catalase which had been first isolated by Sumner and Dounce2) in 1937. In order to isolate the crystalline catalase, Sumner employed fractional precipitation by dioxane. An attempt to substitute acetone for dioxane was unsuccessful in those days. Dounce3) reported in 1942 an acetone method which was almost identical in the principle with their original method.
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