ArticleCurrent microbiology2008
The rus operon genes are differentially regulated when Acidithiobacillus ferrooxidans LR is kept in contact with metal sulfides.
Article in Current microbiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 22 citations in OpenAlex.
- Shifts in the Microbial Populations of Bioleach Reactors Are Determined by Carbon Sources and Temperature.Biology · 2023Article
- Understanding Stress Response to High-Arsenic Gold-Bearing Sulfide Concentrate in Extremely Metal-Resistant AcidophileMicroorganisms · 2020Article
- Walnut Shell Powder Can Limit Acid Mine Drainage Formation by Shaping the Bacterial Community Structure.Current microbiology · 2019Article
- Use of Walnut Shell Powder to Inhibit Expression of Fe(2+)-Oxidizing Genes of Acidithiobacillus Ferrooxidans.International journal of environmental research and public health · 2016Article
- Comparative genomics in acid mine drainage biofilm communities reveals metabolic and structural differentiation of co-occurring archaea.BMC genomics · 2013Article
- The small heat shock proteins from Acidithiobacillus ferrooxidans: gene expression, phylogenetic analysis, and structural modeling.BMC microbiology · 2011Article
- Heat and phosphate starvation effects on the proteome, morphology and chemical composition of the biomining bacteria Acidithiobacillus ferrooxidans.World journal of microbiology & biotechnology · 2011Article
- Overexpression of rusticyanin in Acidithiobacillus ferrooxidans ATCC19859 increased Fe(II) oxidation activity.Current microbiology · 2011Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Acidithiobacillus ferrooxidans is a gram-negative bacterium that obtains energy from the oxidation of ferrous iron or reduced sulfur compounds. In this bacterium, the proteins encoded by the rus operon are involved in electron transfer from Fe(II) to O(2), and the first two proteins in this pathway also participate in the electron transfer pathway from Fe(II) to NAD(P). In this work we analyzed the expression, by real-time PCR, of the eight genes from the rus operon when A. ferrooxidans LR was grown in the presence of iron (control) and then kept in contact with chalcopyrite (CuFeS(2)) and covellite (CuS). A small decrease in rus operon gene expression was observed in the presence of chalcopyrite, while in the presence of covellite the expression of these genes showed a remarkable decrease. These results can be explained by the absence of ferrous iron in covellite. To explain the expression difference observed between the gene cyc1 and the gene rus, we investigated the information content presented at the Translation Initiation Site (TIS) of both genes. cyc1 showed a highly information content (8.4 bits) that can maximize translation, and rus showed a less favorable context (5.5 bits). Our hypothesis is that the energetic metabolism in A. ferrooxidans may be controlled at the transcriptional and posttranscriptional level by different mechanisms.
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