1887

Abstract

The respiratory chains of the related phytopathogenic bacteria and were investigated using the technique of electron paramagnetic resonance which readily detects iron-sulphur centres. In the cytoplasmic membranes of both bacteria three ferredoxin-like centres and a centre detected in the oxidized state ( = 2·015) were resolved. In addition, a Rieske-type iron-sulphur centre ( = 1·90) was observed in but not in . The absence of the Rieske centre in parallels the absence of cytochromes c in this bacterium.

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1984-05-01
2022-01-25
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