abnormal catalase activity decreased catalase activity 2012-01-26T01:31:29Z MP:0011594 MPheno.ontology csmith decreased CAT decreased bacterial catalase-peroxidase activity decreased caperase activity decreased catalase reaction decreased catalase-peroxidase activity decreased equilase activity decreased haem catalase activity decreased heme catalase activity decreased hydrogen-peroxide:hydrogen-peroxide oxidoreductase activity decreased manganese catalase activity decreased optidase activity reduced ability to catalyze the reaction: 2 hydrogen peroxide = O2 + 2 H2O decreased peroxidase activity