title: Periplasmic and membrane-bound respiratory nitrate reductases in Thiosphaera pantotropha. The periplasmic enzyme catalyzes the first step in aerobic denitrification.
abstract: The unusual ability of Thiosphaera pantotropha to catalyze respiratory nitrate reduction under aerobic conditions is shown to correlate with the activity of a periplasmic nitrate reductase that is expressed under both aerobic and anaerobic growth conditions. The organism also synthesizes, but only under anaerobic conditions, a membrane-bound nitrate reductase which resembles the corresponding enzyme in Paracoccus denitrificans in respect of both catalytic properties and inhibition of activity in intact cells in the presence of oxygen.
authors.affiliation: Department of Biochemistry, University of Oxford, UK.
authors.forename: L C
authors.initials: LC
authors.lastname: Bell
authors.forename: D J
authors.initials: DJ
authors.lastname: Richardson
authors.forename: S J
authors.initials: SJ
authors.lastname: Ferguson
mesh_terms: D000332:Aerobiosis; D000693:Anaerobiosis; D002462:Cell Membrane / Q000201:enzymology; D003593:Cytoplasm / Q000201:enzymology; D007700:Kinetics; D009565:Nitrate Reductases / Q000378:metabolism*; D010101:Oxygen Consumption
chemical_list: D009565:Nitrate Reductases