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Investigation on the Thermodynamic Dissociation Kinetics of Photosystem II Supercomplexes To Determine the Binding Strengths of Light-Harvesting Complexes
Ist Teil von
The journal of physical chemistry. B, 2018-02, Vol.122 (5), p.1627-1630
Ort / Verlag
United States: American Chemical Society
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
The photosystem II (PSII) supercomplex splits water utilizing light energy and is composed of a core dimer complex surrounded by light-harvesting complexes (LHCs). In green algae, the major LHCs which are LHCII trimers have thus far been categorized into strongly, moderately, or loosely binding LHCII trimers based on their predicted binding to core complexes. However, the binding energies have been indirectly predicted based on the presence or absence of LHCII trimers in the PSII supercomplex under electron microscopy and have not been determined experimentally. In this study, we investigated the binding of LHCII trimers by analyzing thermodynamic dissociation kinetics using isolated PSII supercomplexes. We identified two activation energies for dissociation of LHCII trimers: 54 ± 19 and 134 ± 8 kJ/mol. This result indicated the types of intermolecular interactions between LHCII trimers and core complexes.
Sprache
Englisch
Identifikatoren
ISSN: 1520-6106
eISSN: 1520-5207
DOI: 10.1021/acs.jpcb.7b12417
Titel-ID: cdi_proquest_miscellaneous_1989609889
Format
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