ArticlePhotosynthesis research2009
Sulfur oxidation in mutants of the photosynthetic green sulfur bacterium Chlorobium tepidum devoid of cytochrome c-554 and SoxB.
Article in Photosynthesis research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
8 citing papers in PubMed, 23 citations in OpenAlex.
- Soluble domains of cytochromeCurrent research in structural biology · 2023Article
- Fluorescence-excitation and Emission Spectroscopy on Single FMO Complexes.Scientific reports · 2016Article
- Evidence for niche partitioning revealed by the distribution of sulfur oxidation genes collected from areas of a terrestrial sulfidic spring with differing geochemical conditions.Applied and environmental microbiology · 2013Article
- Article
- Bacteriochlorophyll f: properties of chlorosomes containing the "forbidden chlorophyll".Frontiers in microbiology · 2012Article
- Mechanisms and evolution of oxidative sulfur metabolism in green sulfur bacteria.Frontiers in microbiology · 2011Article
- C-type cytochromes in the photosynthetic electron transfer pathways in green sulfur bacteria and heliobacteria.Photosynthesis research · 2010Review
- Inorganic sulfur oxidizing system in green sulfur bacteria.Photosynthesis research · 2010Review
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A mutant devoid of cytochrome c-554 (CT0075) in Chlorobium tepidum (syn. Chlorobaculum tepidum) exhibited a decreased growth rate but normal growth yield when compared to the wild type. From quantitative determinations of sulfur compounds in media, the mutant was found to oxidize thiosulfate more slowly than the wild type but completely to sulfate as the wild type. This indicates that cytochrome c-554 would increase the rate of thiosulfate oxidation by serving as an efficient electron carrier but is not indispensable for thiosulfate oxidation itself. On the other hand, mutants in which a portion of the soxB gene (CT1021) was replaced with the aacC1 cassette did not grow at all in a medium containing only thiosulfate as an electron source. They exhibited partial growth yields in media containing only sulfide when compared to the wild type. This indicates that SoxB is not only essential for thiosulfate oxidation but also responsible for sulfide oxidation. An alternative electron carrier or electron transfer path would thus be operating between the Sox system and the reaction center in the mutant devoid of cytochrome c-554. Cytochrome c-554 might function in any other pathway(s) as well as the thiosulfate oxidation one, since even green sulfur bacteria that cannot oxidize thiosulfate contain a cycA gene encoding this electron carrier.
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Registered trials
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