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Hydrogen peroxide is the end product of oxygen reduction by the terminal oxidase in the marine bacterium Pseudomonas nautica 617
Author(s) -
Denis Michel,
Arnaud Sylvain,
Malatesta Francesco
Publication year - 1989
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(89)81394-8
Subject(s) - hydrogen peroxide , chemistry , catalase , cytochrome c oxidase , oxidase test , biochemistry , pseudomonas , bacteria , oxygen , cytochrome c , enzyme , biology , mitochondrion , organic chemistry , genetics
Mitochondrial cytochrome‐ c oxidase as well as several bacterial oxidases are known to reduce dioxygen to water. For the first time, a heme‐containing oxidase, the terminal enzyme of the aerobic respiratory system in the marine bacterium Pseudomonas nautica 617, is shown to reduce molecular oxygen only to hydrogen peroxide. Whereas the cell content is well protected from H 2 O 2 , by catalase, the possible efflux of H 2 O 2 , into seawater could play an important role in the environment.