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Manganese oxidation by an intracellular protein of a Pseudomonas species
Author(s) -
Jung W. K.,
Schweisfurth R.
Publication year - 1979
Publication title -
zeitschrift für allgemeine mikrobiologie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0044-2208
DOI - 10.1002/jobm.19790190206
Subject(s) - manganese , oxidizing agent , chemistry , intracellular , oxygen , strain (injury) , biochemistry , inorganic chemistry , biology , organic chemistry , anatomy
Abstract Cultures of a Pseudomonas sp. strain MnB 1 produce an intracellular, managanese oxidizing protein (abbrev. as Mn ox. protein) during the stationary phase of growth. This protein is heat labile, can be inactivated by protease and has a pH‐optimum for manganese oxidation at pH 7.0. Mn 2+ is oxidized only at concentrations below 3 · 10 −5 M . The occurrence of the protein is not dependent on the presence of Mn 2+ , but is clearly related to the cessation of growth after the end of the exponential growth phase Oxygen, coenzymes, and low molecular weight components of the cell extract seem not to be involved in the rection as electron acceptors for the oxidation of Mn 2+ . Continued managanese oxidation by Mn ox. protein results in a progressive decrease in activity which corresponds to the amount of formed manganese oxide.