Geobacillus stearothermophilus LV cadA gene mediates resistance to cadmium, lead and zinc in zntA mutants of Salmonella serovar typhimurium

José M. Pérez, Gonzalo A. Pradenas, Claudio A. Navarro, Daniel R. Henríquez, Sergio E. Pichuantes, Claudio C. Vásquez

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Salmonella enterica serovar Typhimurium cells expressing the cadA gene of Geobacillus stearothermophilus LV exhibit a hypersensitive phenotype to cadmium chloride. Deletion of the ORF STM3576 from the Salmonella genome resulted in cadmium, lead and zinc sensitivity, confirming that this ORF is a homologue of the zntA gene. The observed sensitivity was reverted upon expression of the G. stearothermophilus LV cadA gene. These results indicate that the cadA gene product is involved in Cd, Ph and Zn resistance as a classical P-type ATPase and strongly suggest that the observed hypersensitive phenotype to these metals can be related to the function of the host zntA gene product.

Original languageEnglish (US)
Pages (from-to)661-668
Number of pages8
JournalBiological Research
Volume39
Issue number4
StatePublished - 2006
Externally publishedYes

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Keywords

  • CadA
  • Cadmium
  • Lead
  • P-type ATPase
  • Zinc
  • ZntA

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Pérez, J. M., Pradenas, G. A., Navarro, C. A., Henríquez, D. R., Pichuantes, S. E., & Vásquez, C. C. (2006). Geobacillus stearothermophilus LV cadA gene mediates resistance to cadmium, lead and zinc in zntA mutants of Salmonella serovar typhimurium. Biological Research, 39(4), 661-668.