Water oxidation in photosystem II

W Lubitz, M Chrysina, N Cox - Photosynthesis research, 2019 - Springer
Biological water oxidation, performed by a single enzyme, photosystem II, is a central
research topic not only in understanding the photosynthetic apparatus but also for the …

Current understanding of the mechanism of water oxidation in photosystem II and its relation to XFEL data

N Cox, DA Pantazis, W Lubitz - Annual review of biochemistry, 2020 - annualreviews.org
The investigation of water oxidation in photosynthesis has remained a central topic in
biochemical research for the last few decades due to the importance of this catalytic process …

Untangling the sequence of events during the S2 → S3 transition in photosystem II and implications for the water oxidation mechanism

M Ibrahim, T Fransson, R Chatterjee, MH Cheah… - Proceedings of the …, 2020 - pnas.org
In oxygenic photosynthesis, light-driven oxidation of water to molecular oxygen is carried out
by the oxygen-evolving complex (OEC) in photosystem II (PS II). Recently, we reported the …

One of the Substrate Waters for O2 Formation in Photosystem II Is Provided by the Water-Splitting Mn4CaO5 Cluster's Ca2+ Ion

CJ Kim, RJ Debus - Biochemistry, 2019 - ACS Publications
During the catalytic step immediately prior to O–O bond formation in Photosystem II, a water
molecule deprotonates and moves next to the water-splitting Mn4CaO5 cluster's O5 oxo …

Mechanism of Oxygen Evolution and Mn4CaO5 Cluster Restoration in the Natural Water-Oxidizing Catalyst

M Capone, D Narzi, L Guidoni - Biochemistry, 2021 - ACS Publications
Water oxidation occurring in the first steps of natural oxygenic photosynthesis is catalyzed by
the pigment/protein complex Photosystem II. This process takes place on the Mn4Ca cluster …

Structural isomers of the S2 state in photosystem II: do they exist at room temperature and are they important for function?

R Chatterjee, L Lassalle, S Gul, FD Fuller… - Physiologia …, 2019 - Wiley Online Library
In nature, an oxo‐bridged Mn4CaO5 cluster embedded in photosystem II (PSII), a
membrane‐bound multi‐subunit pigment protein complex, catalyzes the water oxidation …

Mutation-induced shift of the photosystem II active site reveals insight into conserved water channels

DA Flesher, J Liu, J Wang, CJ Gisriel, KR Yang… - Journal of Biological …, 2024 - jbc.org
Photosystem II (PSII) is the water-plastoquinone photo-oxidoreductase central to oxygenic
photosynthesis. PSII has been extensively studied for its ability to catalyze light-driven water …

Alteration of the O2-Producing Mn4Ca Cluster in Photosystem II by the Mutation of a Metal Ligand

RJ Debus - Biochemistry, 2021 - ACS Publications
The O2-evolving Mn4Ca cluster in photosystem II (PSII) is arranged as a distorted Mn3Ca
cube that is linked to a fourth Mn ion (denoted as Mn4) by two oxo bridges. The Mn4 and Ca …

Role of the O4 channel in photosynthetic water oxidation as revealed by Fourier transform infrared difference and time-resolved infrared analysis of the D1-S169A …

Y Shimada, T Kitajima-Ihara, R Nagao… - The journal of physical …, 2020 - ACS Publications
Photosynthetic water oxidation takes place at the Mn4CaO5 cluster in photosystem II.
Although the atomic structures of its intermediates called S states have recently been …

D1-S169A substitution of photosystem II perturbs water oxidation

I Ghosh, G Banerjee, CJ Kim, K Reiss, VS Batista… - Biochemistry, 2019 - ACS Publications
In photosystem II (PSII), photosynthetic water oxidation occurs at the tetramanganese–
calcium cluster that cycles through light-induced intermediates (S0–S4) to produce oxygen …