Catalase-peroxidase

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Catalase-peroxidase
Identifiers
EC no. 1.11.1.21
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Catalase-peroxidase (EC 1.11.1.21, katG (gene)) is an enzyme with systematic name donor:hydrogen-peroxide oxidoreductase. [1] [2] [3] [4] [5] This enzyme catalyses the following chemical reaction

  1. donor + H2O2⇌ oxidized donor + 2 H2O (peroxidase)
  2. 2 H2O2⇌ O2 + 2 H2O (catalase)

This enzyme is a strong catalase with H2O2 as donor which releases O2.

References

  1. ↑ Loewen PC, Triggs BL, George CS, Hrabarchuk BE (May 1985). "Genetic mapping of katG, a locus that affects synthesis of the bifunctional catalase-peroxidase hydroperoxidase I in Escherichia coli". Journal of Bacteriology. 162 (2): 661–7. doi:10.1128/JB.162.2.661-667.1985. PMC   218901 . PMID   3886630.
  2. ↑ Hochman A, Goldberg I (April 1991). "Purification and characterization of a catalase-peroxidase and a typical catalase from the bacterium Klebsiella pneumoniae". Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology. 1077 (3): 299–307. doi:10.1016/0167-4838(91)90544-a. PMID   2029529.
  3. ↑ Fraaije MW, Roubroeks HP, Hagen WR, Van Berkel WJ (January 1996). "Purification and characterization of an intracellular catalase-peroxidase from Penicillium simplicissimum". European Journal of Biochemistry. 235 (1–2): 192–8. CiteSeerX   10.1.1.317.1785 . doi:10.1111/j.1432-1033.1996.00192.x. PMID   8631329.
  4. ↑ Bertrand T, Eady NA, Jones JN, Nagy JM, Jamart-Grégoire B, Raven EL, Brown KA (September 2004). "Crystal structure of Mycobacterium tuberculosis catalase-peroxidase". The Journal of Biological Chemistry. 279 (37): 38991–9. doi: 10.1074/jbc.M402382200 . PMID   15231843.
  5. ↑ Vlasits J, Jakopitsch C, Bernroitner M, Zamocky M, Furtmüller PG, Obinger C (August 2010). "Mechanisms of catalase activity of heme peroxidases". Archives of Biochemistry and Biophysics. 500 (1): 74–81. doi:10.1016/j.abb.2010.04.018. PMID   20434429.
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