The cellular machinery of Ferroplasma acidiphilum is iron-protein-dominated

Manuel Ferrer (), Olga V. Golyshina, Ana Beloqui, Peter N. Golyshin and Kenneth N. Timmis
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Manuel Ferrer: CSIC, Institute of Catalysis, Cantoblanco
Olga V. Golyshina: HZI-Helmholtz Centre for Infection Research
Ana Beloqui: CSIC, Institute of Catalysis, Cantoblanco
Peter N. Golyshin: HZI-Helmholtz Centre for Infection Research
Kenneth N. Timmis: HZI-Helmholtz Centre for Infection Research

Nature, 2007, vol. 445, issue 7123, 91-94

Abstract: An iron constitution Ferroplasma acidiphilum is an extremophilic microbe found in iron- and heavy-metal-rich acidic habitats, such as pyritic acidic mine drainage waters. Most known living organisms, including close relatives of F. acidiphilum that share its habitats, contain just a few conserved iron-metalloproteins. But the metabolic machinery of F. acidiphilum is unique in that its proteome contains a high percentage of iron-metalloproteins. The iron atoms in many of these proteins may act as 'iron rivets' stabilizing their three-dimensional structure. It is possible that the F. acidiphilum lineage evolved entirely within the pyrite habitat, and that its protein repertoire might represent a throwback to an earlier form of cellular life.

Date: 2007
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DOI: 10.1038/nature05362

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