Identification of a Na+‑Binding Site near the Oxygen-Evolving Complex of Spinach Photosystem II
Wang J, Perez-Cruet JM, Huang HL, Reiss K, Gisriel CJ, Banerjee G, Kaur D, Ghosh I, Dziarski A, Gunner MR, Batista VS, Brudvig GW. Identification of a Na+‑Binding Site near the Oxygen-Evolving Complex of Spinach Photosystem II. Biochemistry 2020, 59: 2823-2831. PMID: 32650633, DOI: 10.1021/acs.biochem.0c00303.Peer-Reviewed Original ResearchConceptsOxygen-evolving complexSpinach photosystem IIRedox-active Mn ionPhotosystem IIOxygen evolution activityQuantum mechanical calculationsOxomanganese clusterHydroxide anionCommon counterionCryo-electron microscopy mapMechanical calculationsAmino acid residuesMn ionsIonsElectrostatic simulationsMicroscopy mapsAcid residuesComplexesDeprotonationAnionsCounterionsNaChlorideSitesCl