NH3 Binding to the S2 State of the O2‑Evolving Complex of Photosystem II: Analogue to H2O Binding during the S2 → S3 Transition

Ammonia binds directly to the oxygen-evolving complex of photosystem II (PSII) upon formation of the S2 intermediate, as evidenced by electron paramagnetic resonance spectroscopy. We explore the binding mode by using quantum mechanics/molecular mechanics methods and simulations of extended X-ray abs...

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Bibliographic Details
Published in:Biochemistry (Easton) 2015-09, Vol.54 (38), p.5783-5786
Main Authors: Askerka, Mikhail, Vinyard, David J, Brudvig, Gary W, Batista, Victor S
Format: Article
Language:English
Subjects:
ammonia
Ammonia - metabolism
Binding Sites
electron paramagnetic resonance spectroscopy
Electron Spin Resonance Spectroscopy
ligands
Manganese - chemistry
Manganese - metabolism
Models, Molecular
Oxygen - metabolism
oxygen evolving complex
Photosystem II Protein Complex - chemistry
Photosystem II Protein Complex - metabolism
Plant Proteins - chemistry
Plant Proteins - metabolism
Plants - chemistry
Plants - metabolism
Protein Binding
quantum mechanics
Quantum Theory
Water - metabolism
X-Ray Absorption Spectroscopy
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