Articles | Volume 1, issue 2
Magn. Reson., 1, 261–274, 2020
https://doi.org/10.5194/mr-1-261-2020

Special issue: Robert Kaptein Festschrift

Magn. Reson., 1, 261–274, 2020
https://doi.org/10.5194/mr-1-261-2020

Research article 13 Nov 2020

Research article | 13 Nov 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)

Geertje J. Janssen et al.

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Latest update: 05 May 2021
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Short summary
Natural photosynthetic reaction centers (RCs) are built up by two parallel branches of cofactors. While photosystem II and purple bacterial RCs selectively use one branch for light-driven electron transfer, photosystem I, as also shown here, is using both branches. Comparing NMR chemical shifts, we shown that the two donor cofactors in photosystem I are similarly distinguished to those in purple bacterial RCs (Schulten et al., 2002; Biochemistry 41, 8708). Alternative reasons are discussed.