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Metal Metabolism in Bacteria

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Biochemistry".

Deadline for manuscript submissions: closed (28 June 2019) | Viewed by 3183

Special Issue Editor

Institute of Environmental Microbiology, College of Environment and Resources, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Interests: microbe-metal interactions; legume–rhizobia interactions; protozoan–microbe interactions; phytoremediation

Special Issue Information

Dear Colleagues,

Metals have undergone changes in speciation and bioavailability during Earth’s history. Consequently, they have greatly influenced the evolution of life. In this Special Issue, emphasis will be placed at the interface of metals, such as copper and zinc, and microbes and how these interactions shape survival and virulence. In addition, the behavior of metals and metalloids in the environment will be explored. If possible speciation of metals will be linked to genes and metal resistance determinants. Special emphasis will also be given to metal resistance determinants of less studied metals, such as tellurium, chromium and antimonite.

Prof. Christopher Rensing
Guest Editor

Manuscript Submission Information

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Keywords

  • Heavy metals
  • virulence
  • amoeba
  • metal speciation

Published Papers (1 paper)

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Research

12 pages, 1311 KiB  
Article
ytiB and ythA Genes Reduce the Uranium Removal Capacity of Bacillus atrophaeus
by Li Wang, Shiqi Xiao, Xiaoming Chen, Shilin Chen, Shanqiang Wang, Chao Wang, Yunlai Tang and Faqin Dong
Int. J. Mol. Sci. 2019, 20(7), 1766; https://doi.org/10.3390/ijms20071766 - 10 Apr 2019
Cited by 6 | Viewed by 2849
Abstract
Two Bacillus atrophaeus strains, the first being a highly stress-resistant ATCC 9372 strain and the Ua strain identified from a chromium mine by our lab, differ in their abilities to tolerate and remove Uranium (VI) from contaminated water. An increase in U(VI) concentration [...] Read more.
Two Bacillus atrophaeus strains, the first being a highly stress-resistant ATCC 9372 strain and the Ua strain identified from a chromium mine by our lab, differ in their abilities to tolerate and remove Uranium (VI) from contaminated water. An increase in U(VI) concentration in growth media led to a decrease in the tolerance and bio-remedial capacity of both strains. However, under high concentrations of U(VI) in the growth media, the ATCC 9372 strain demonstrated a higher tolerance and a higher removal capacity than the Ua strain. Two approaches, transcriptome sequencing and transgenic technology, were used to elucidate the relationship between particular genes within these two strains and their U(VI) removal capacity. Sequencing confirmed the expression of two genes unique to the Ua strain, previously designated ytiB and ythA. They encode putative proteins that show the highest levels of identity to carbonic anhydrase and cytochrome bd terminal oxidase I, respectively. Using the pBE-S DNA vector, ytiB and ythA were transformed into the ATCC 9372 strain of Bacillus atrophaeus. Under a U(VI) concentration of 120 mg/L, the removal rates of the transgenic ATCC 9372-ytiB and ATCC 9372-ythA strains decreased by 7.55% and 7.43%, respectively, compared to the removal rate of the control strain transformed with empty plasmid. The results suggest that both ythA and ytiB genes have a negative influence on the uranium removing capacity of Bacillus atrophaeus. This finding will help to elucidate the molecular mechanisms of uranium removal by bacteria. Full article
(This article belongs to the Special Issue Metal Metabolism in Bacteria)
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