Explanipedia

Arsenic biosorption mediated by arsenic-binding proteins QueF and QueE in Lysinibacillus sp. OR-15 Open

Qing Xu, Wen Tian, Hongliang Liu, Gejiao Wang, Kaixiang Shi · 2025

Microorganisms play a crucial role in arsenic transformation, with associated genes highly conserved within the ars operon. Although microorganisms can absorb arsenic, no specific genes responsible for intracellular sequestration have been…

Ferruginous hemeprotein HhuH facilitates the cadmium adsorption and chromium reduction in Stenotrophomonas sp. SY1 Open

Zijie Zhou, Hongbo Yu, Jiahui Liu, Lin Zhu, Gejiao Wang , et al. · 2024

Cadmium (Cd) and chromium (Cr) are frequently encountered toxicants, while iron (Fe) plays a crucial role in bacterial survival under conditions of heavy metal stress. However, intracellular Fe ion depletion by heavy metals leads to a stat…

Simultaneous removal of nitrogen and arsenite by heterotrophic nitrification and aerobic denitrification bacterium Hydrogenophaga sp. H7 Open

Xia Fan, Li Nie, Zhengjun Chen, Yongliang Zheng, Gejiao Wang , et al. · 2023

Introduction Nitrogen and arsenic contaminants often coexist in groundwater, and microbes show the potential for simultaneous removal of nitrogen and arsenic. Here, we reported that Hydrogenophaga sp. H7 was heterotrophic nitrification and…

A Coculture of Enterobacter and Comamonas Species Reduces Cadmium Accumulation in Rice Open

Xing Wang, Qing Xu, Kang Hu, Gejiao Wang, Kaixiang Shi · 2022

The accumulation of cadmium (Cd) in plants is strongly impacted by soil microbes, but its mechanism remains poorly understood. Here, we report the mechanism of reduced Cd accumulation in rice by coculture of Enterobacter and Comamonas spec…

Indole-Acetic Acid Promotes Ammonia Removal Through Heterotrophic Nitrification, Aerobic Denitrification With Mixed Enterobacter sp. Z1 and Klebsiella sp. Z2 Open

Yuxiao Zhang, Qing Xu, Gejiao Wang, Kaixiang Shi · 2022

Mixed Enterobacter sp. Z1 and Klebsiella sp. Z2 displayed an outstanding ammonia removal capacity than using a single strain. Metabolomics, proteomics, and RNA interference analysis demonstrated that the HNAD process was closely related to…

Identification of a Novel Chromate and Selenite Reductase FesR in Alishewanella sp. WH16-1 Open

Zijie Zhou, Lin Zhu, Yixuan Dong, Le-Xing You, Shixue Zheng , et al. · 2022

A ferredoxin protein (AAY72_06850, named FesR) was identified to associate with chromate [Cr(VI)] resistance in Alishewanella sp. WH16-1. FesR and its similar proteins were phylogenetically separated from other reductase families. Unlike t…

Simultaneous Removal of Nitrogen and Arsenite by Heterotrophic Nitrification and Aerobic Denitrification Bacterium Hydrogenophaga Sp. H7 Open

Xia Fan, Li Nie, Zhengjun Chen, Yongliang Zheng, Gejiao Wang , et al. · 2022

NemA Catalyzes Trivalent Organoarsenical Oxidation and Is Regulated by the Trivalent Organoarsenical-Selective Transcriptional Repressor NemR Open

Kaixiang Shi, Manohar Radhakrishnan, Xingli Dai, Barry P. Rosen, Gejiao Wang · 2021

Synthetic aromatic arsenicals such as roxarsone (Rox(V)) and nitarsone (Nit(V)) have been used as animal growth enhancers and herbicides. Microbes contribute to redox cycling between the relatively less toxic pentavalent and highly toxic t…

Integrated Metabolomics and Targeted Gene Transcription Analysis Reveal Global Bacterial Antimonite Resistance Mechanisms Open

Jingxin Li, Yuxiao Zhang, Xing Wang, Seth T. Walk, Gejiao Wang · 2021

Antimony (Sb)-resistant bacteria have potential applications in the remediation of Sb-contaminated sites. However, the effect of Sb(III) exposure on whole-cell metabolic change has not been studied. Herein, we combined untargeted metabolom…

Decrease in Cd Accumulation in Rice Using Mixed Enterobacter and Comamonas Bacteria Open

Xing Wang, Qing Xu, Kang Hu, Gejiao Wang, Kaixiang Shi · 2021

Comamonas testosteroni antA encodes an antimonite-translocating P-type ATPase Open

Lijin An, Xiong Luo, Minghan Wu, Liling Feng, Kaixiang Shi , et al. · 2020

Microbial Oxidation of Arsenite: Regulation, Chemotaxis, Phosphate Metabolism and Energy Generation Open

Kaixiang Shi, Qian Wang, Gejiao Wang · 2020

Arsenic (As) is a metalloid that occurs widely in the environment. The biological oxidation of arsenite [As(III)] to arsenate [As(V)] is considered a strategy to reduce arsenic toxicity and provide energy. In recent years, research interes…

Anaerobic Bacterial Immobilization and Removal of Toxic Sb(III) Coupled With Fe(II)/Sb(III) Oxidation and Denitrification Open

Jingxin Li, Yuxiao Zhang, Shiling Zheng, Fanghua Liu, Gejiao Wang · 2019

Antimony (Sb) pollution is a worldwide problem. In some anoxic sites, such as Sb mine drainage and groundwater sediment, the Sb concentration is extremely elevated. Therefore, effective Sb remediation strategies are urgently needed. In con…

High-quality-draft genome sequence of the heavy metal resistant and exopolysaccharides producing bacterium Mucilaginibacter pedocola TBZ30T Open

Xia Fan, Jingwei Tang, Li Nie, Jing Huang, Gejiao Wang · 2018

Nocardioides silvaticus sp. nov., isolated from forest soil Open

Chan Li, Kaixiang Shi, Yuxiao Zhang, Gejiao Wang · 2018

A Gram-stain-positive, non-motile, rod-shaped bacterial strain S-34^T was isolated from forest soil. According to 16S rRNA gene sequence analysis, strain S-34^T was related to Nocardioides members and showed the highest…

Efflux Transporter ArsK Is Responsible for Bacterial Resistance to Arsenite, Antimonite, Trivalent Roxarsone, and Methylarsenite Open

Kaixiang Shi, Chan Li, Christopher Rensing, Xingli Dai, Xia Fan , et al. · 2018

The metalloid extrusion systems are very important bacterial resistance mechanisms. Each of the previously reported ArsB, Acr3, ArsP, ArsJ, and MSF1 transport proteins conferred only inorganic or organic arsenic/antimony resistance. In con…

Adsorption Removal of Multiple Dyes Using Biogenic Selenium Nanoparticles from an Escherichia coli Strain Overexpressed Selenite Reductase CsrF Open

Xian Xia, Zijie Zhou, Shijuan Wu, Dan Wang, Shixue Zheng , et al. · 2018

Selenite reductase CsrF overexpressed Escherichia coli was used as a microbial factory to produce Se(0) nanoparticles (Bio-SeNPs). The Bio-SeNPs were characterized by transmission electronic microscopy, element mapping, scanning electron m…

Microbial arsenic oxidation and chemotaxis (Abstract) Open

Gejiao Wang · 2018

We isolated a highly As(III) resistant [minimal inhibitory concentration (MIC) = 25 mM] and As(III)-oxidizing bacterium A. tumefaciens GW4 from As-enriched groundwater sediments.Unlike most of the heterotrophic As(III)-oxidizing bacteria u…

Proteins enriched in charged amino acids control the formation and stabilization of selenium nanoparticles in Comamonas testosteroni S44 Open

Ding Xu, Lichen Yang, Yu Wang, Gejiao Wang, Christopher Rensing , et al. · 2018

Elemental selenium nanoparticles (SeNPs) are useful in medicine, environmental remediation and in material science. Biosynthesized SeNPs (BioSeNPs) by bacteria are cheap, eco-friendly and have a lower cytotoxicity in comparison with chemic…

Regulation of Class A β-Lactamase CzoA by CzoR and IscR in Comamonas testosteroni S44 Open

Weiping Zhuang, Hongliang Liu, Jingxin Li, Lu Chen, Gejiao Wang · 2017

A genomic analysis of Comamonas testosteroni S44 revealed a gene that encodes a LysR family transcriptional regulator (here named czoR, czo for cefazolin) located upstream of a putative class A β-lactamase encoding gene (here…

High-quality-draft genomic sequence of Paenibacillus ferrarius CY1T with the potential to bioremediate Cd, Cr and Se contamination Open

Jingxin Li, Wei Guo, Manman Shi, Yajing Cao, Gejiao Wang · 2017

Paenibacillus ferrarius CY1 T (= KCTC 33419 T = CCTCC AB2013369 T ) is a Gram-positive, aerobic, endospore-forming, motile and rod-shaped bacterium isolated from iron mineral soil. This bacterium reduces sulfate (SO 4 2− ) to S 2− , which …

Arsenite oxidation regulator AioR regulates bacterial chemotaxis towards arsenite in Agrobacterium tumefaciens GW4 Open

Kaixiang Shi, Xia Fan, Zixu Qiao, Yushan Han, Timothy R. McDermott , et al. · 2017

Abiotic and biotic factors responsible for antimonite oxidation in Agrobacterium tumefaciens GW4 Open

Jingxin Li, Yang Birong, Manman Shi, Kai Yuan, Wei Guo , et al. · 2017

Antimonite [Sb(III)]-oxidizing bacteria can transform the toxic Sb(III) into the less toxic antimonate [Sb(V)]. Recently, the cytoplasmic Sb(III)-oxidase AnoA and the periplasmic arsenite [As(III)] oxidase AioAB were shown to responsible f…

A proposed model of bacterial energy metabolism in response to Sb(III) in A. tumefaciens GW4. Open

Jingxin Li, Yang Birong, Manman Shi, Kai Yuan, Wei Guo , et al. · 2017

The energy generated from the process of Sb(III) oxidation was used to (1) Sb(III) efflux; (2) Pi or Sb(V) transportation; (3) G3P transportation; (4) protein refolding; (5) phosphonate metabolism; (6) DNA repair; (7) flagellum assemblage …

Information of the proteins/genes with different expression ratio in proteomics and qRT-PCR. Open

Jingxin Li, Yang Birong, Manman Shi, Kai Yuan, Guo Wei , et al. · 2017

Information of the proteins/genes with different expression ratio in proteomics and qRT-PCR.

Effects upon metabolic pathways and energy production by Sb(III) and As(III)/Sb(III)-oxidase gene aioA in Agrobacterium tumefaciens GW4 Open

Jingxin Li, Yang Birong, Manman Shi, Kai Yuan, Wei Guo , et al. · 2017

Agrobacterium tumefaciens GW4 is a heterotrophic arsenite [As(III)]/antimonite [Sb(III)]-oxidizing strain. The As(III) oxidase AioAB is responsible for As(III) oxidation in the periplasm and it is also involved in Sb(III) oxidation in Agro…

An Oxidoreductase AioE is Responsible for Bacterial Arsenite Oxidation and Resistance Open

Qian Wang, Yushan Han, Kaixiang Shi, Xia Fan, Lu Wang , et al. · 2017

Disrupting ROS-protection mechanism allows hydrogen peroxide to accumulate and oxidize Sb(III) to Sb(V) in Pseudomonas stutzeri TS44 Open

Dan Wang, Fengqiu Zhu, Qian Wang, Christopher Rensing, Peng Yu , et al. · 2016

Based on the results, we propose that a disruption of the pathway involved in ROS-protection allowed H₂O₂ to accumulate. In addition to the previously reported enzyme mediated Sb(III) oxidation, the mechanism of bacte…

Draft genomic sequence of a chromate- and sulfate-reducing Alishewanella strain with the ability to bioremediate Cr and Cd contamination Open

Xian Xia, Jiahong Li, Shuijiao Liao, Gaoting Zhou, Hui Wang , et al. · 2016

Microbial Antimony Biogeochemistry: Enzymes, Regulation, and Related Metabolic Pathways Open

Jingxin Li, Qian Wang, Ronald S. Oremland, Thomas R. Kulp, Christopher Rensing , et al. · 2016

Antimony (Sb) is a toxic metalloid that occurs widely at trace concentrations in soil, aquatic systems, and the atmosphere. Nowadays, with the development of its new industrial applications and the corresponding expansion of antimony minin…

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