Affiliation:
1. Department of Biological Function and Genetic Resources Science, Faculty of Agriculture, Okayama University, 1-1-1 Tsushima Naka, Okayama 700, Japan, and Department of Biochemistry, Meharry Medical College, Nashville, Tennessee 372082
Abstract
The existence of a hydrogen sulfide:ferric ion oxidoreductase, which catalyzes the oxidation of elemental sulfur with ferric ions as an electron acceptor to produce ferrous and sulfite ions, was assayed with washed intact cells and cell extracts of various kinds of iron-oxidizing bacteria, such as
Thiobacillus ferrooxidans
13598, 13661, 14119, 19859, 21834, 23270, and 33020 from the American Type Culture Collection,
Leptospirillum ferrooxidans
2705 and 2391 from the Deutsche Sammlung von Mikroorganismen,
L. ferrooxidans
BKM-6-1339 and P3A, and moderately thermophilic iron-oxidizing bacterial strains BC1, TH3, and Alv. It was found that hydrogen sulfide:ferric ion oxidoreductase activity comparable to that of
T. ferrooxidans
AP19-3 was present in all iron-oxidizing bacteria tested, suggesting a wide distribution of this enzyme in iron-oxidizing bacteria.
Publisher
American Society for Microbiology
Subject
Ecology,Applied Microbiology and Biotechnology,Food Science,Biotechnology
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