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A potentiometric and kinetic study on the respiratory chain of ferrous-iron-grown Thiobacillus ferrooxidans.

Authors
  • Ingledew, W J
  • Cobley, J G
Type
Published Article
Journal
Biochimica et Biophysica Acta
Publisher
Elsevier
Publication Date
Apr 02, 1980
Volume
590
Issue
2
Pages
141–158
Identifiers
PMID: 6245683
Source
Medline
License
Unknown

Abstract

The type and number of respiratory chain components present in membranes of Thiobacillus ferrooxidans have been investigated. These redox components were resolved potentiometrically and kinetically. Using optical techniques two cytochromes a1, multiple cytochromes c and two cytochromes b were detected. By using electron paramagnetic resonance, two copper-containing centres, high and low spin ferric haems and a ferredoxin centre were detected. Based on the combination of a potentiometric resolution and a kinetic study a model for the sequence of the respiratory chain components in the Fe2+ to O2 branch of the T. ferrooxidans respiratory chain is proposed.

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