title: The primary electron acceptor in photosynthesis.
mesh_terms: D020130:Bacterial Chromatophores / Q000378:metabolism / Q000528:radiation effects; D002736:Chloroplasts / Q000378:metabolism / Q000528:radiation effects*; D002844:Chromatium / Q000166:cytology / Q000528:radiation effects*; D003080:Cold Temperature; D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D007501:Iron; D007700:Kinetics; D007834:Lasers; D008027:Light; D008566:Membranes / Q000528:radiation effects; D010084:Oxidation-Reduction; D010788:Photosynthesis; D059828:Plant Cells; D010940:Plant Proteins / Q000378:metabolism; D010944:Plants / Q000528:radiation effects; D011830:Radiation Effects; D013455:Sulfur
chemical_list: D010940:Plant Proteins; D013455:Sulfur; D007501:Iron