title: Photobiochemical production of carbon monoxide by Thermus thermophilus ba3 -cytochrome c oxidase.
abstract: We report the photobiochemical production of carbon monoxide by a terminal ba3 -cytochrome c oxidase from T. thermophilus HB8. FTIR and time-resolved step-scan FTIR spectroscopies were combined to probe this process and also monitor the concomitant binding of the produced gas to other intact ba3 molecules forming the ba3 -CO complex. The activation of this mechanism by ba3 -oxidase under visible excitation raises the question as to whether such a mechanism is physiologically relevant to the extreme environment in which it operates.
authors.affiliation: Department of Environmental Science and Technology, Cyprus University of Technology, P.O. Box 50329, 3603 Lemesos (Cyprus).
authors.forename: Constantinos
authors.initials: C
authors.lastname: Koutsoupakis
authors.forename: Tewfik
authors.initials: T
authors.lastname: Soulimane
authors.forename: Constantinos
authors.initials: C
authors.lastname: Varotsis
mesh_terms: D002248:Carbon Monoxide / Q000737:chemistry*; D003576:Electron Transport Complex IV / Q000737:chemistry*; D010088:Oxidoreductases / Q000737:chemistry*; D055668:Photochemical Processes; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods*; D016963:Thermus thermophilus / Q000737:chemistry*
chemical_list: D002248:Carbon Monoxide; D010088:Oxidoreductases; D003576:Electron Transport Complex IV
keywords: FTIR spectroscopy; biochemistry; carbon monoxide; heme proteins; oxidoreductases