title: [Influence of magnetic field on hydrogen peroxide decomposition by catalase].
abstract: The rate constants of H2O2 decomposition equal to 0.45 X 10(7) M-1S-1 per hem and Michaelis constants higher than 0.3 M were found by gas volume meter and spectrophotometer methods for purified preparations of catalase from bovine liver. Unlike the results obtained earlier the magnetic field with induction 0.65 T and 0.012 T does not affect the constant rate within 3%. It was found with the substrate concentration less than 0.01 M when the classical catalase mechanism was observed and with higher concentration of the substrate up to 0.7 M when the catalase inhibition by H2O2 played an important role.
mesh_terms: D000818:Animals; D002374:Catalase / Q000378:metabolism*; D002417:Cattle; D006861:Hydrogen Peroxide; D007700:Kinetics; D008099:Liver / Q000201:enzymology; D008280:Magnetics
chemical_list: D006861:Hydrogen Peroxide; D002374:Catalase
vernacular_title: O vliianii magnitnogo polia na razlozhenie perekisi vodoroda katalazoĭ.