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Luo Z, Li Z, Sun J, Shi K, Lei M, Tie B, Du H. Multiple mechanisms collectively mediate tungsten homeostasis and resistance in Citrobacter sp. Lzp2. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130877. [PMID: 36731318 DOI: 10.1016/j.jhazmat.2023.130877] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/19/2023] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Tungsten (W) is an emerging contaminant, and current knowledge on W resistance profiles of microorganisms remains scarce and fragmentary. This study aimed to explore the physiological responses of bacteria under W stress and to resolve genes and metabolic pathways involved in W resistance using a transcriptome expression profiling assay. The results showed that the bacterium Citrobacter sp. Lzp2, screened from W-contaminated soil, could tolerate hundreds of mM W(VI) with a 50% inhibiting concentration of ∼110 mM. To cope with W stress, Citrobacter sp. Lzp2 secreted large amounts of proteins through the type VI secretory system (T6SS) to chelate W oxoanions via carboxylic groups in extracellular polymeric substances (EPS), and could transport cytosolic W outside via the multidrug efflux pumps (mdtABC and acrD). Intracellular W is probably bound by chaperone proteins and metal-binding pterin (tungstopterin) through the sulfur relay system. We propose that tetrathionate respiration is a new metabolic pathway for cellular W detoxification likely producing thio-tungstate. We conclude that multiple mechanisms collectively mediate W homeostasis and resistance in Citrobacter sp. Lzp2. Our results have important implications not only for understanding the intricate regulatory network of W homeostasis in microbes but also for bio-recovery and bioremediation of W in contaminated environments.
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Affiliation(s)
- Zipei Luo
- College of Resources and Environment, Hunan Agricultural University, 410127 Changsha, China
| | - Zhen Li
- College of Resources and Environmental Sciences, Nanjing Agricultural University, 210095 Nanjing, China
| | - Jing Sun
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550081 Guiyang, China
| | - Kaixiang Shi
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, 430070 Wuhan, China
| | - Ming Lei
- College of Resources and Environment, Hunan Agricultural University, 410127 Changsha, China
| | - Boqing Tie
- College of Resources and Environment, Hunan Agricultural University, 410127 Changsha, China
| | - Huihui Du
- College of Resources and Environment, Hunan Agricultural University, 410127 Changsha, China.
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Nazir R, Soleja N, Agrawal N, Siddiqi TO, Mohsin M. A ratiometric fluorescent probe based on FRET for selective monitoring of tungsten in living cells. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Coimbra C, Branco R, Morais PV. Efficient bioaccumulation of tungsten by Escherichia coli cells expressing the Sulfitobacter dubius TupBCA system. Syst Appl Microbiol 2019; 42:126001. [PMID: 31326140 DOI: 10.1016/j.syapm.2019.126001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 07/05/2019] [Accepted: 07/09/2019] [Indexed: 01/30/2023]
Abstract
Tungsten (W) is a valuable element with considerable industrial and economic importance that belongs to the European Union list of critical metals with a high supply risk. Therefore, the development of effective and new methods for W recovery is essential to ensure a sustainable supply. In the present study, the Sulfitobacter dubius W transport system TupABC was explored in order to demonstrate both its functionality in Escherichia coli cells and to construct a bioaccumulator (EcotupW). The complete gene cluster tupBCA or partial gene cluster tupBC were cloned in an expression vector and transformed into E. coli. Metal accumulation was evaluated when each construct strain was grown with three separate metal oxyanions (tungstate, molybdate or chromate). The specificity of the bioaccumulator was determined by competition assays using cells grown with mixed solutions of metal oxyanions (W/Mo and W/Cr). The results showed the relevance of the TupA protein in the TupABC transporter system to W-uptake and also allowed Mo and Cr accumulations, although with amounts 1.7 and 2.9-fold lower than W, respectively. To identify the importance of the valine residue in the accumulation efficiency of the VTTS motif, site-directed mutagenesis of tupA was performed. A mutant with a threonine residue, instead of the respective valine, confirmed that W was internalized by nearly double the amount compared to the native form. The findings indicated that cells carrying the native S. dubius TupABC system were great W-bioaccumulators and could be promising tools for W recovery.
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Affiliation(s)
- C Coimbra
- CEMMPRE - Center of Mechanical Engineering, Materials and Processes, University of Coimbra, Coimbra, 3030-788, Portugal
| | - R Branco
- CEMMPRE - Center of Mechanical Engineering, Materials and Processes, University of Coimbra, Coimbra, 3030-788, Portugal; Department of Life Sciences, University of Coimbra, Coimbra, 3001-401, Portugal.
| | - P V Morais
- CEMMPRE - Center of Mechanical Engineering, Materials and Processes, University of Coimbra, Coimbra, 3030-788, Portugal; Department of Life Sciences, University of Coimbra, Coimbra, 3001-401, Portugal
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4
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Blazevic A, Albu M, Mitsche S, Rittmann SKMR, Habler G, Milojevic T. Biotransformation of Scheelite CaWO 4 by the Extreme Thermoacidophile Metallosphaera sedula: Tungsten-Microbial Interface. Front Microbiol 2019; 10:1492. [PMID: 31312192 PMCID: PMC6614383 DOI: 10.3389/fmicb.2019.01492] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/14/2019] [Indexed: 01/04/2023] Open
Abstract
The tungsten-microbial interactions and microbial bioprocessing of tungsten ores, which are still underexplored, are the focus of the current study. Here we show that the biotransformation of tungsten mineral scheelite performed by the extreme thermoacidophile Metallosphaera sedula leads to the breakage of scheelite structure and subsequent tungsten solubilization. Total soluble tungsten is significantly higher in cultures containing M. sedula grown on scheelite than the abiotic control, indicating active bioleaching. Advanced analytical electron microscopy was used in order to achieve nanoscale resolution ultrastructural studies of M. sedula grown on tungsten bearing scheelite. In particular, we describe that M. sedula mediated the biotransformation of scheelite, which was accompanied by the release of tungsten into solution and tungsten biomineralization of the cell surface. Furthermore, we observed intracellular incorporation of redox heterogenous Mn- and Fe-containing nano-clusters. Our results highlight unique metallophilic life in hostile environments extending the knowledge of tungsten biogeochemistry. Based on these findings biohydrometallurgical processing of tungsten ores can be further explored. Importantly, biogenic tungsten carbide-like nanolayers described herein are potential targets for developing nanomaterial biotechnology.
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Affiliation(s)
- Amir Blazevic
- Extremophiles/Space Biochemistry Group, Department of Biophysical Chemistry, University of Vienna, Vienna, Austria
| | - Mihaela Albu
- Graz Centre for Electron Microscopy, Graz, Austria
| | | | - Simon K-M R Rittmann
- Archaea Physiology and Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, University of Vienna, Vienna, Austria
| | - Gerlinde Habler
- Department of Lithospheric Research, University of Vienna, Vienna, Austria
| | - Tetyana Milojevic
- Extremophiles/Space Biochemistry Group, Department of Biophysical Chemistry, University of Vienna, Vienna, Austria
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Furuhashi Y, Honda R, Noguchi M, Hara-Yamamura H, Kobayashi S, Higashimine K, Hasegawa H. Optimum conditions of pH, temperature and preculture for biosorption of europium by microalgae Acutodesmus acuminatus. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2018.12.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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6
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Coimbra C, Farias P, Branco R, Morais PV. Tungsten accumulation by highly tolerant marine hydrothermal Sulfitobacter dubius strains carrying a tupBCA cluster. Syst Appl Microbiol 2017; 40:388-395. [DOI: 10.1016/j.syapm.2017.06.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 06/13/2017] [Accepted: 06/25/2017] [Indexed: 10/19/2022]
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Ogi T, Makino T, Iskandar F, Tanabe E, Okuyama K. Heat-treated Escherichia coli as a high-capacity biosorbent for tungsten anions. BIORESOURCE TECHNOLOGY 2016; 218:140-145. [PMID: 27359063 DOI: 10.1016/j.biortech.2016.06.076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2016] [Revised: 06/17/2016] [Accepted: 06/19/2016] [Indexed: 06/06/2023]
Abstract
Adsorption performance in the biosorption of tungsten using Escherichia coli cells can be significantly improved by using cell suspensions that have been heat-treated at ⩽100°C. In the case of E. coli cells suspension heated at 100°C, the aqueous tungsten ions concentration rapidly decreased from 0.8mmol/L to practically zero within 1h. This biosorption time is much shorter than that of non-heat treated E. coli cells (7h). Furthermore, the adsorption saturation amount for cells heat-treated at 100°C was significantly increased up to 1.62mmol-W/g-E. coli compared to the unheated E. coli cells case (0.62mmol-W/g-E. coli). Determination of the surface potential and surface structure along with quantitative analyses of free amino acids of heat-treated E. coli cells were also carried out and revealed that heated cells have a high zeta potential and express a higher concentration of amino acids on the cell surface.
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Affiliation(s)
- Takashi Ogi
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan.
| | - Takahiko Makino
- Cutting Tool R&D Division, Kyocera Corporation, Kagoshima Sendai Plant 1810 Taki-cho, Satsumasendai, Kagoshima 895-0292, Japan
| | - Ferry Iskandar
- Department of Physics, Bandung Institute of Technology, Ganesha 10, Bandung 40132, West Java, Indonesia
| | - Eishi Tanabe
- Hiroshima Prefectural Technology Research Institute, 3-10-32 Kagamiyama, Higashi-Hiroshima 739-0046, Japan
| | - Kikuo Okuyama
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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Ogi T, Makino T, Okuyama K, Stark WJ, Iskandar F. Selective Biosorption and Recovery of Tungsten from an Urban Mine and Feasibility Evaluation. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b04843] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takashi Ogi
- Department
of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Takahiko Makino
- Cutting Tool R&D Division, Kyocera Corporation, Kagoshima Sendai Plant, 1810 Taki-cho, Satsumasendai, Kagoshima 895-0292, Japan
| | - Kikuo Okuyama
- Department
of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Wendelin J. Stark
- Institute
for Chemical and Bioengineering, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zurich, Switzerland
| | - Ferry Iskandar
- Department
of Physics, Institute of Technology Bandung, Ganesha 10, Bandung, 40132 West
Java, Indonesia
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