NDLI: Arsenic resistance in the archaeon "Ferroplasma acidarmanus": new insights into the structure and evolution of the ars genes

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Arsenic resistance in the archaeon "Ferroplasma acidarmanus": new insights into the structure and evolution of the ars genes

Purification and properties of the sulfur oxygenase/reductase from the acidothermophilic archaeon, Acidianus strain S5

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Extremophiles : Volume 7, Issue 1, February 2003

Extremophiles : Volume 6

Extremophiles : Volume 5

Extremophiles : Volume 4

Extremophiles : Volume 3

Extremophiles : Volume 2

Extremophiles : Volume 1

Arsenic resistance in the archaeon "Ferroplasma acidarmanus": new insights into the structure and evolution of the ars genes

Content Provider	Springer Nature Link
Author	Gihring, Thomas M. Bond, Philip L. Peters, Stephen C. Banfield, Jillian F.
Copyright Year	2003
Abstract	Arsenic resistance in the acidophilic iron-oxidizing archaeon "Ferroplasma acidarmanus" was investigated. F. acidarmanus is native to arsenic-rich environments, and culturing experiments confirm a high level of resistance to both arsenite and arsenate. Analyses of the complete genome revealed protein-encoding regions related to known arsenic-resistance genes. Genes encoding for ArsR (arsenite-sensitive regulator) and ArsB (arsenite-efflux pump) homologues were found located on a single operon. A gene encoding for an ArsA relative (anion-translocating ATPase) located apart from the arsRB operon was also identified. Arsenate-resistance genes encoding for proteins homologous to the arsenate reductase ArsC and the phosphate-specific transporter Pst were not found, indicating that additional unknown arsenic-resistance genes exist for arsenate tolerance. Phylogenetic analyses of ArsA-related proteins suggest separate evolutionary lines for these proteins and offer new insights into the formation of the arsA gene. The ArsB-homologous protein of F. acidarmanus had a high degree of similarity to known ArsB proteins. An evolutionary analysis of ArsB homologues across a number of species indicated a clear relationship in close agreement with 16S rRNA evolutionary lines. These results support a hypothesis of arsenic resistance developing early in the evolution of life.
Starting Page	123
Ending Page	130
Page Count	8
File Format	PDF
ISSN	14310651
Journal	Extremophiles
Volume Number	7
Issue Number	2
Language	English
Publisher	Springer-Verlag
Publisher Date	2003-01-16
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Medicine Microbiology

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Arsenic resistance in the archaeon "Ferroplasma acidarmanus": new insights into the structure and evolution of the ars genes

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