Hydrogen metabolism in the hyperthermophilic bacterium Aquifex aeolicus.
Aquifex aeolicus is a microaerophilic, hydrogen-oxidizing, hyperthermophilic bacterium containing three [NiFe] hydrogenases. Two of these three enzymes (one membrane-bound and one soluble) have been purified and characterized. The Aquifex hydrogenases are thermostable and tolerant to oxygen. A cellular function for the three hydrogenases has been proposed. The two membrane-bound periplasmic hydrogenases may function in energy conservation, whereas the soluble cytoplasmic hydrogenase is probably involved in the CO(2) fixation pathway.
Guiral
M
M
Laboratoire de Bioénergétique et Ingénierie des Protéines (BIP), IBSM-CNRS, 31 chemin Joseph Aiguier, 13402 Marseille cedex 20, France.
Aubert
C
C
Giudici-Orticoni
M-T
MT
D001419:Bacteria / Q000378:metabolism*; D004578:Electron Spin Resonance Spectroscopy; D006859:Hydrogen / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism; D013379:Substrate Specificity
D006859:Hydrogen; D010100:Oxygen