title: The photocycle of the chloride pump halorhodopsin. II: Quantum yields and a kinetic model.
abstract: The quantum yield of the primary photoreaction of HR478 was determined as phi(green) = 0.34 +/- 0.02 and that of the photochemical reconversion of HRL410 into HR578 as phi(blue) = 0.01 +/- 0.004. From steady-state illumination and flash-photolysis experiments, a quantitative description of HRL410 formation and decay was made leading to a model of the photocycle in isolated, light-adapted HR. This model satisfies all known facts about HR including its photochronic behaviour.
authors.affiliation: Max-Planck-Institut für Biochemie, D-8033, Martinsried, FRG.
authors.forename: D
authors.initials: D
authors.lastname: Oesterhelt
authors.forename: P
authors.initials: P
authors.lastname: Hegemann
authors.forename: J
authors.initials: J
authors.lastname: Tittor
mesh_terms: D018118:Chloride Channels / Q000378:metabolism*; D019605:Euryarchaeota / Q000378:metabolism; D025602:Halorhodopsins / Q000378:metabolism*; D007700:Kinetics; D008027:Light; D008956:Models, Chemical; D010782:Photolysis
chemical_list: D018118:Chloride Channels; D025602:Halorhodopsins