Spectral Evidence for a Component Involved in Hydrogen Metabolism of Soybean Nodule Bacteroids | Zendy

G. Eisbrenner | Zendy; Harold J. Evans | Zendy

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Spectral Evidence for a Component Involved in Hydrogen Metabolism of Soybean Nodule Bacteroids

Author(s) -

G. Eisbrenner,

Harold J. Evans

Publication year - 1982

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.70.6.1667

Subject(s) - hydrogenase , mutant , biochemistry , enzyme , rhizobium , metabolism , biology , component (thermodynamics) , nitrogen fixation , chemistry , bacteria , gene , genetics , physics , thermodynamics

A component with a difference spectrum similar to that of b-type cytochromes which becomes reduced upon the addition of H(2) has been demonstrated in soybean nodule bacteroids. This electron carrier, referred to as component 559-H(2), is present in hydrogenase-positive strains of Rhizobium japonicum but has not been detected in mutants that lack hydrogenase activity or in hydrogenase-negative wild-type strains. A positive correlation between concentrations of component 559-H(2) and hydrogenase activities has been established. These results provide further evidence that component 559-H(2) is involved in H(2) metabolism in R. japonicum.

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