Effects of Protons and Small Alcohols on the Oxygen-Evolving Complex of Photosystem II
Higher plants and algae use oxygenic photosynthesis to convert solar energy to reducing equivalents and chemical energy. The ultimate electron donor to oxygenic photosynthesis is water. Oxidation of water to oxygen occurs in the oxygen-evolving complex (OEC) in Photosystem II (PSII). The OEC is composed of four Mn atoms, Ca2+ and Cl-. The OEC cycles through five states (S0 - S4) during oxidation o
