Water oxidation in oxygenic photosynthesis studied by magnetic resonance techniques
The understanding of light‐induced biological water oxidation in oxygenic photosynthesis is
of great importance both for biology and (bio) technological applications. The chemically …
of great importance both for biology and (bio) technological applications. The chemically …
Alternative Mechanism for O2 Formation in Natural Photosynthesis via Nucleophilic Oxo–Oxo Coupling
O2 formation in photosystem II (PSII) is a vital event on Earth, but the exact mechanism
remains unclear. The presently prevailing theoretical model is “radical coupling”(RC) …
remains unclear. The presently prevailing theoretical model is “radical coupling”(RC) …
Does serial femtosecond crystallography depict state-specific catalytic intermediates of the oxygen-evolving complex?
Recent advances in serial femtosecond crystallography (SFX) of photosystem II (PSII),
enabled by X-ray free electron lasers (XFEL), provided the first geometric models of distinct …
enabled by X-ray free electron lasers (XFEL), provided the first geometric models of distinct …
Proton exit pathways surrounding the oxygen evolving complex of photosystem II
Photosystem II allows water to be the primary electron source for the photosynthetic electron
transfer chain. Water is oxidized to dioxygen at the Oxygen Evolving Complex (OEC), a Mn 4 …
transfer chain. Water is oxidized to dioxygen at the Oxygen Evolving Complex (OEC), a Mn 4 …
The exchange of the fast substrate water in the S 2 state of photosystem II is limited by diffusion of bulk water through channels–implications for the water oxidation …
C de Lichtenberg, CJ Kim, P Chernev, RJ Debus… - Chemical …, 2021 - pubs.rsc.org
The molecular oxygen we breathe is produced from water-derived oxygen species bound to
the Mn4CaO5 cluster in photosystem II (PSII). Present research points to the central oxo …
the Mn4CaO5 cluster in photosystem II (PSII). Present research points to the central oxo …
Proton and Water Transfer Pathways in the S2 → S3 Transition of the Water-Oxidizing Complex in Photosystem II: Time-Resolved Infrared Analysis of the Effects of D1-N298A Mutation …
Photosynthetic water oxidation is performed through a light-driven cycle of five intermediates
(S0–S4 states) in photosystem II (PSII). The S2→ S3 transition, which involves concerted …
(S0–S4 states) in photosystem II (PSII). The S2→ S3 transition, which involves concerted …
Role of D1-Glu65 in proton transfer during photosynthetic water oxidation in photosystem II
Photosynthetic water oxidation takes place at the Mn4CaO5 cluster in photosystem II (PSII)
through a light-driven cycle of five intermediates called S states (S0–S4). Although the PSII …
through a light-driven cycle of five intermediates called S states (S0–S4). Although the PSII …
Reversible structural isomerization of Nature's water oxidation catalyst prior to O–O bond formation
Photosynthetic water oxidation is catalyzed by a manganese–calcium oxide cluster, which
experiences five “S-states” during a light-driven reaction cycle. The unique “distorted chair” …
experiences five “S-states” during a light-driven reaction cycle. The unique “distorted chair” …
Independent Mutation of Two Bridging Carboxylate Ligands Stabilizes Alternate Conformers of the Photosynthetic O2-Evolving Mn4CaO5 Cluster in Photosystem II
RJ Debus, PH Oyala - The Journal of Physical Chemistry B, 2024 - ACS Publications
The O2-evolving Mn4CaO5 cluster in photosystem II is ligated by six carboxylate residues.
One of these is D170 of the D1 subunit. This carboxylate bridges between one Mn ion (Mn4) …
One of these is D170 of the D1 subunit. This carboxylate bridges between one Mn ion (Mn4) …
The Perturbed Free‐Energy Landscape: Linking Ligand Binding to Biomolecular Folding
AS Abdelsattar, Y Mansour, F Aboul‐ela - ChemBioChem, 2021 - Wiley Online Library
The effects of ligand binding on biomolecular conformation are crucial in drug design,
enzyme mechanisms, the regulation of gene expression, and other biological processes …
enzyme mechanisms, the regulation of gene expression, and other biological processes …