title: Electron transfer in biological systems: an overview.
mesh_terms: D003300:Copper; D003580:Cytochromes; D004579:Electron Transport; D005420:Flavoproteins; D006420:Hemeproteins; D007506:Iron-Sulfur Proteins; D007700:Kinetics; D008565:Membrane Proteins; D008667:Metalloproteins; D009243:NAD / Q000502:physiology; D009591:Nitrogenase / Q000502:physiology; D010084:Oxidation-Reduction; D013816:Thermodynamics
chemical_list: D003580:Cytochromes; D005420:Flavoproteins; D006420:Hemeproteins; D007506:Iron-Sulfur Proteins; D008565:Membrane Proteins; D008667:Metalloproteins; D009243:NAD; D003300:Copper; D009591:Nitrogenase