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dc.contributor.authorJanssen, Geertje
dc.contributor.authorEschenbach, Patrick
dc.contributor.authorKurle, Patrick
dc.contributor.authorBode, Bela Ernest
dc.contributor.authorNeugebauer, Johannes
dc.contributor.authorde Groot, Huub
dc.contributor.authorMatysik, Jörg
dc.contributor.authorAlia, Alia
dc.date.accessioned2020-11-16T15:30:14Z
dc.date.available2020-11-16T15:30:14Z
dc.date.issued2020-11-13
dc.identifier.citationJanssen , G , Eschenbach , P , Kurle , P , Bode , B E , Neugebauer , J , de Groot , H , Matysik , J & Alia , A 2020 , ' Analysis of the electronic structure of the primary electron donor of photosystem I of Spirodela oligorrhiza by photochemically induced dynamic nuclear polarization (photo-CIDNP) solid-state nuclear magnetic resonance (NMR) ' , Magnetic Resonance , vol. 1 , no. 2 , pp. 261-274 . https://doi.org/10.5194/mr-1-261-2020en
dc.identifier.issn2699-0016
dc.identifier.otherPURE: 271013422
dc.identifier.otherPURE UUID: 81f36810-2151-48d0-a813-50a8d288a1b2
dc.identifier.otherORCID: /0000-0002-3384-271X/work/83085962
dc.identifier.urihttp://hdl.handle.net/10023/20986
dc.descriptionThis research has been supported by the Dutch Science Organization (NWO (grant no. 818.02.019)), the Deutsche Forschungsgemeinschaft (grant nos. MA 497/2-1 and MA 497/11-1), the Alexander von Humboldt-Stiftung, and the People Programme (Marie Curie Actions) of the European Union, Seventh Framework Programme (grant agreement no. 252213).en
dc.description.abstractThe electron donor in photosystem I (PSI), the chlorophyll dimer P700, is studied by photochemically induced dynamic nuclear polarization (photo-CIDNP) magic angle spinning (MAS) nuclear magnetic resonance (NMR) on selectively 13C and uniformly 15N labeled PSI core preparations (PSI-100) obtained from the aquatic plant duckweed (Spirodela oligorrhiza). Light-induced signals originate from the isotope-labeled nuclei of the cofactors involved in the spin-correlated radical pair forming upon light excitation. Signals are assigned to the two donor cofactors (Chl a and Chl a') and the two acceptor cofactors (both Chl a). Light-induced signals originating from both donor and acceptor cofactors demonstrate that electron transfer occurs through both branches of cofactors in the pseudo-C2 symmetric reaction center (RC). The experimental results supported by quantum chemical calculations indicate that this functional symmetry occurs in PSI despite similarly sized chemical shift differences between the cofactors of PSI and the functionally asymmetric special pair donor of the bacterial RC of Rhodobacter sphaeroides. This contributes to converging evidence that local differences in time-averaged electronic ground-state properties, over the donor are of little importance for the functional symmetry breaking across photosynthetic RC species.
dc.language.isoeng
dc.relation.ispartofMagnetic Resonanceen
dc.rightsCopyright © Author(s) 2020. Open Access. This work is distributed under the Creative Commons Attribution 4.0 License.en
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQDen
dc.titleAnalysis of the electronic structure of the primary electron donor of photosystem I of Spirodela oligorrhiza by photochemically induced dynamic nuclear polarization (photo-CIDNP) solid-state nuclear magnetic resonance (NMR)en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Chemistryen
dc.contributor.institutionUniversity of St Andrews.Biomedical Sciences Research Complexen
dc.contributor.institutionUniversity of St Andrews.Centre of Magnetic Resonanceen
dc.contributor.institutionUniversity of St Andrews.EaSTCHEMen
dc.identifier.doihttps://doi.org/10.5194/mr-1-261-2020
dc.description.statusPeer revieweden


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