title: Kinetics of structural reorganizations in multilamellar photosynthetic membranes monitored by small-angle neutron scattering.
abstract: We demonstrate the power of time-resolved small-angle neutron scattering experiments for the investigation of the structure and structural reorganizations of multilamellar photosynthetic membranes. In addition to briefly summarizing our results on thylakoid membranes isolated from higher plants and in unicellular organisms, we discuss the advantages and technical and methodological limitations of time-resolved SANS. We present a detailed and more systematical investigation of the kinetics of light-induced structural reorganizations in isolated spinach thylakoid membranes, which show how changes in the repeat distance and in the long-range order of the multilamellar membranes can be followed with a time resolution of seconds. We also present data from comparative measurements performed on thylakoid membranes isolated from tobacco.
authors.affiliation: Paul Scherrer Institute, Laboratory for Neutron Scattering, 5232 Villigen PSI, Switzerland. gergely.nagy@psi.ch
authors.forename: Gergely
authors.initials: G
authors.lastname: Nagy
authors.forename: László
authors.initials: L
authors.lastname: Kovács
authors.forename: Renáta
authors.initials: R
authors.lastname: Ünnep
authors.forename: Ottó
authors.initials: O
authors.lastname: Zsiros
authors.forename: László
authors.initials: L
authors.lastname: Almásy
authors.forename: László
authors.initials: L
authors.lastname: Rosta
authors.forename: Peter
authors.initials: P
authors.lastname: Timmins
authors.forename: Judith
authors.initials: J
authors.lastname: Peters
authors.forename: Dorthe
authors.initials: D
authors.lastname: Posselt
authors.forename: Győző
authors.initials: G
authors.lastname: Garab
mesh_terms: D007425:Intracellular Membranes / Q000737:chemistry* / Q000648:ultrastructure; D007700:Kinetics; D033363:Neutron Diffraction; D053838:Scattering, Small Angle; D018724:Spinacia oleracea / Q000737:chemistry / Q000166:cytology; D020524:Thylakoids / Q000737:chemistry* / Q000648:ultrastructure