15N photo-CIDNP MAS NMR on both photosystems and magnetic fielddependent 13C photo-CIDNP MAS NMR in photosystem II of the diatom Phaeodactylum tricornutum

Author(s):
Zill, J.C.; Kansy, M.; Goss, R.; Alia, A. (0000-0002-4900-9749); Wilhelm, C.; Matysik, J.
Published
2018
Publication type
Article / Letter to editor

Abstract

C photo-CIDNP MAS NMR signals indicating an alternative arrangement of cofactors which allows to quench the Chl a donor triplet state in contrast to the situation in plant PS II. This unusual quenching mechanism is related to a carotenoid molecule in close vicinity to the Chl a donor. In addition to the photo-CIDNP MAS NMR signals arising from the donor and the primary electron acceptor cofactors, a complete set of signals of the imidazole ring ligating to the magnesium of Chl a can be observed.

Date issued
2018-09-07
Language
English
Is part of
Photosynthesis Research (2018), Vol. 140, no. 2, p. 151-171
hdl
1887/3175734
doi
10.1007/s11120-018-0578-9