Medical term:
catalatic
catalase
[kat´ah-lās]a hemoprotein enzyme that specifically catalyzes the decomposition of hydrogen peroxide and is found in almost all cells except certain anaerobic bacteria. Deficiency results in acatalasia. adj., adj catalat´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
cat·a·lase
(kat'ă-lās), [MIM*115500]A hemoprotein catalyzing the decomposition of hydrogen peroxide to water and oxygen (2H2O2 → O2 + 2H2O); a deficiency of catalase is associated with acatalasemia.
Farlex Partner Medical Dictionary © Farlex 2012
catalase
(kăt′l-ās′, -āz′)n.
An enzyme found in living cells that catalyzes the decomposition of hydrogen peroxide, a potentially harmful oxidizing agent, into water and oxygen.
cat′a·lat′ic (kăt′l-ăt′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
CAT
A gene on chromosome 11p13 that encodes catalase, an enzyme which plays a central role in the body’s defence against oxidative stress, converting the reactive oxygen species hydrogen peroxide (H2O2) to water and oxygen, thereby mitigating H2O2’s toxic effects.Molecular pathology
Defects in CAT cause acatalasemia. Oxidative stress may play a role in the development of chronic or late-onset diseases—e.g., diabetes, asthma, Alzheimer's disease, systemic lupus erythematosus, rheumatoid arthritis and cancer.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
cat·a·lase
(kat'ă-lās)A hemoprotein catalyzing the decomposition of hydrogen peroxide to water and oxygen (2H2O2→ O2 + 2H2O).
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
catalase
An ENZYME found in the microbodies (peroxisomes) of cells and that promotes the reaction in which two molecules of hydrogen peroxide are converted to two molecules of water and one molecule of oxygen.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
catalase
an iron-containing ENZYME found in tissues such as liver and potato tubers whose function is to catalyse the breakdown of toxic hydrogen peroxide, a by-product of aerobic respiration, into water and oxygen:
Catalase has the highest known TURNOVER RATE and works by reducing the ACTIVATION ENERGY required from about 80 kJ to less than 10 kJ.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
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