The catalase protein of acatalasemic and hypocatalasemic red blood cells. II. Spectrophotometric study

1. In the absorption spectra of crude catalase solution (Stages 2, 3, and 5) of normal blood, three absorption bands characterizing catalase molecules are recognized. 2. The three absorption bands specific for catalase cannot be found in acatalasemic blood extracts (Stages 2 and 3). 3. It is inferred that catalase is not present in the crude catalase extract from acatalasemic red blood cells.