title: Electron paramagnetic resonance studies of iron porphin and chlorin systems.
mesh_terms: D003461:Crystallography; D004578:Electron Spin Resonance Spectroscopy; D006418:Heme / Q000032:analysis*; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007501:Iron; D008623:Mercaptoethanol; D008961:Models, Structural; D008968:Molecular Conformation; D009211:Myoglobin / Q000032:analysis; D009942:Organometallic Compounds / Q000032:analysis*; D011166:Porphyrins / Q000032:analysis*; D011487:Protein Conformation; D013329:Structure-Activity Relationship
chemical_list: D006454:Hemoglobins; D009211:Myoglobin; D009942:Organometallic Compounds; D011166:Porphyrins; D006418:Heme; D008623:Mercaptoethanol; D007501:Iron