title: Energy of the low-lying excited levels for some reduced [4Fe-4S] ferredoxins, from the relaxation broadening of the E.P.R. signals.
mesh_terms: D001426:Bacterial Proteins / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy; D005288:Ferredoxins; D010084:Oxidation-Reduction; D013696:Temperature; D013816:Thermodynamics
chemical_list: D001426:Bacterial Proteins; D005288:Ferredoxins