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FEMS Microbiol Rev. 1993 Jul;11(1-3):9-18.

Enzymes of aerobic respiration on iron.

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1
Department of Biochemistry, Meharry Medical College, Nashville, Tennessee 37208.

Abstract

Bacteria capable of aerobic respiration on ferrous ions are spread throughout eubacterial and archaebacterial phyla. Comparative spectroscopic analyses revealed that phylogenetically distinct organisms expressed copious quantities of spectrally distinct redox-active biomolecules during autotrophic growth on soluble iron. Thiobacillus ferroxidans, Leptospirillum ferrooxidans, Sulfobacillus thermosulfidooxidans, and Metallosphaera sedula possessed iron respiratory chains dominated by a blue copper protein, a novel red cytochrome, a novel yellow protein, and a novel yellow cytochrome, respectively. Further investigation of each type of respiratory chain will be necessary to deduce the advantages and disadvantages of each.

[Indexed for MEDLINE]

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