A hemoprotein catalyzing the decomposition of hydrogen peroxide to water and oxygen (2H2O2 → O2 + 2H2O); a deficiency of c. is associated with acatalasemia.
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cat·a·lase 'kat-əl-.ās, -.āz n a red crystalline enzyme that consists of a protein complex with hematin groups and catalyzes the decomposition of hydrogen peroxide into water and oxygen
cat·a·lat·ic .kat-əl-'at-ik adj
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n.
an enzyme, present in many cells (including red blood cells and liver cells), that catalyses the breakdown of hydrogen peroxide.
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cat·a·lase (katґə-lās) [EC 1.11.1.6] a hemoprotein enzyme of the oxidoreductase class that catalyzes the conversion of hydrogen peroxide to water and oxygen, protecting cells. It is found in almost all animal cells except certain obligate anaerobic bacteria. Deficiency of the enzyme, an autosomal recessive trait, results in acatalasia. catalatic adjMedical dictionary. 2011.