CzcD Is a Heavy Metal Ion Transporter Involved in Regulation of Heavy Metal Resistance in Ralstonia sp. Strain CH34

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CzcD is a heavy metal ion transporter involved in regulation of heavy metal resistance in Ralstonia sp. strain CH34.

The Czc system of Ralstonia sp. strain CH34 mediates resistance to cobalt, zinc, and cadmium through ion efflux catalyzed by the CzcCB(2)A cation-proton antiporter. The CzcD protein is involved in the regulation of the Czc system. It is a membrane-bound protein with at least four transmembrane alpha-helices and is a member of a subfamily of the cation diffusion facilitator (CDF) protein family,...

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AtATM3 is involved in heavy metal resistance in Arabidopsis.

AtATM3, an ATP-binding cassette transporter of Arabidopsis (Arabidopsis thaliana), is a mitochondrial protein involved in the biogenesis of iron-sulfur clusters and iron homeostasis in plants. Our gene expression analysis showed that AtATM3 is up-regulated in roots of plants treated with cadmium [Cd(II)] or lead (II); hence, we investigated whether this gene is involved in heavy metal tolerance...

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Running Title: Atatm3 Is Involved in Heavy Metal Resistance

AtATM3, an ABC transporter of Arabidopsis thaliana, is a mitochondrial protein involved in the biogenesis of Fe/S clusters, and iron homeostasis in plants. Our gene expression analysis showed that AtATM3 is upregulated in roots of plants treated with Cd(II) or Pb(II), hence we investigated whether this gene is involved in heavy metal tolerance. We found that AtATM3 overexpressing plants were en...

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Regulation of the cnr cobalt and nickel resistance determinant from Ralstonia sp. strain CH34.

Ralstonia sp. strain CH34 is resistant to nickel and cobalt cations. Resistance is mediated by the cnr determinant located on plasmid pMOL28. The cnr genes are organized in two clusters, cnrYXH and cnrCBA. As revealed by reverse transcriptase PCR and primer extension, transcription from these operons is initiated from promoters located upstream of the cnrY and cnrC genes. These two promoters ex...

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Bioremediation Activity of Pb (II) Resistance Citrobacter sp. MKH2 Isolated from Heavy Metal Contaminated Sites in Iran

Heavy metal pollution all around the world has become a major environmental concern and the bioremediation of polluted environments is an increasingly popular strategy due to both its efficiency and safety. In this study, a bacterial strain resistant to heavy metal was isolated from metal contaminated sites. Strain MKH2 was removed Pb (II) with 95.06%. This isolate was also resistant to zinc, c...

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ژورنال

عنوان ژورنال: Journal of Bacteriology

سال: 1999

ISSN: 0021-9193,1098-5530

DOI: 10.1128/jb.181.22.6876-6881.1999