Identification of the protonation and oxidation states of the oxygen-evolving complex in the low-dose X-ray crystal structure of photosystem II

Identification of the protonation and oxidation states of the oxygen-evolving complex in the low-dose X-ray crystal structure of photosystem II

In photosystem II (PSII), the O3 and O4 sites of the Mn4CaO5 cluster form hydrogen bonds with D1-His337 and a water molecule (W539), respectively. The low-dose X-ray structure shows that these hydrogen bond distances differ between the two homogeneous monomer units (A and B) [Tanaka et al., J. Am Ch...

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Bibliographic Details
Main Authors: Keisuke Saito, Shu Nakao, Hiroshi Ishikita
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-03-01
Series:Frontiers in Plant Science
Subjects:
crystal structure
x-ray radiation damage
low barrier hydrogen bond
photosystem II
oxygen evolving complex
quantum mechanics/molecular mechanics (QM/MM)
Online Access:https://www.frontiersin.org/articles/10.3389/fpls.2023.1029674/full

Internet

https://www.frontiersin.org/articles/10.3389/fpls.2023.1029674/full

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