title: Evidence for localisation of accumulated chlorophyll cation on the D1-accessory chlorophyll in the reaction centre of photosystem II.
abstract: Absorption and circular dichroism spectra of Photosystem II (PS II) reaction centres (RC) were studied and compared with spectra calculated on the basis of point-dipole approximation. Chlorophyll cation was accumulated during a light treatment of PS II RC in the presence of artificial electron acceptor silicomolybdate. Light-induced difference spectra and their calculated counterparts revealed the location of accumulated cation at the accessory chlorophyll of the D1 protein subunit.
authors.affiliation: Institute of Physical Biology, University of South Bohemia, Zamek 136, 373 33 Nove Hrady, Czech Republic. vacha@jcu.cz
authors.forename: Frantisek
authors.initials: F
authors.lastname: Vacha
authors.forename: Jakub
authors.initials: J
authors.lastname: Psencik
authors.forename: Michal
authors.initials: M
authors.lastname: Kuty
authors.forename: Milan
authors.initials: M
authors.lastname: Durchan
authors.forename: Pavel
authors.initials: P
authors.lastname: Siffel
mesh_terms: D002412:Cations / Q000737:chemistry / Q000378:metabolism; D002734:Chlorophyll / Q000737:chemistry* / Q000378:metabolism*; D002942:Circular Dichroism; D004735:Energy Transfer; D008027:Light; D008954:Models, Biological; D018532:Pisum sativum / Q000737:chemistry / Q000378:metabolism*; D045332:Photosystem II Protein Complex / Q000737:chemistry* / Q000378:metabolism*; D010940:Plant Proteins / Q000737:chemistry / Q000378:metabolism; D013054:Spectrophotometry, Atomic; D013696:Temperature
chemical_list: D002412:Cations; D045332:Photosystem II Protein Complex; D010940:Plant Proteins; D002734:Chlorophyll