Catalytic activity:2 H (2) O (2) = O (2) + 2 H (2) O. ,cofactor:Heme group. ,cofactor:NADP. ,Disease:Defects in CAT are the cause of acatalasia (ACATLAS) [MIM:115500]; also known as acatalasemia. This disease is characterized by absence of catalase activity in red cells and is often associated with ulcerating oral lesions. ,Function:Occurs in almost all aerobically respiring organisms and serves to protect cells from the toxic effects of hydrogen peroxide. Promotes growth of cells including T-cells , B-cells , myeloid leukemia cells , melanoma cells , mastocytoma cells and normal and transformed fibroblast cells. ,online information:Catalase entry ,PTM:The N-terminus is blocked. ,similarity:Belongs to the catalase family. ,subunit:Homotetramer. ,
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