title: EPR studies by 57Fe isotopic substitution on the nature of an unknown electron acceptor in Azotobacter vinelandii phosphorylating particles.
mesh_terms: D001395:Azotobacter / Q000378:metabolism*; D001665:Binding Sites; D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D004735:Energy Transfer; D005292:Ferricyanides; D007501:Iron; D007503:Iron Isotopes; D008872:Microwaves; D010085:Oxidative Phosphorylation; D010940:Plant Proteins / Q000378:metabolism; D011485:Protein Binding; D011487:Protein Conformation
chemical_list: D005292:Ferricyanides; D007503:Iron Isotopes; D010940:Plant Proteins; D007501:Iron