Coordinate induction of peroxidase and H2O2-forming nucleoside oxidase in Flavobacterium meningosepticum

Abstract

Flavobacterium meningosepticum produced a peroxidase coordinately with a H P O P -forming nucleoside oxidase under culture conditions where the bacterium inducibly produced the nucleoside oxidase. The nucleoside oxidase and peroxidase both required Fe P or Fe Q for their production, and Cu P enhanced the production of both enzymes. The addition of nucleoside analogs to the medium also enhanced the production of both enzymes. The time course of peroxidase production coincided with that of the nucleoside oxidase production. These results suggest that the peroxidase has a specific function related to the nucleoside oxidase reaction, in breaking down the H P O P formed, which would otherwise cause oxidative cell damage. z 1999 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.

Extracellular oxidases of Cerrena sp. complementarily functioning in artificial dye decolorization including laccase, manganese peroxidase, and novel versatile peroxidases

“…We screened various kinds of laccase-and peroxidase-prodcuing microorganisms decolorizing microorganisms from various natural sources with dye-decolorizing activity as an indicator, and found an alkaline laccase [26], a thermostable laccase [18], and two bacterial peroxidases [11,12,20]. In this study, we found that a trametoid basidiomycete, Cerrena sp.…”