title: ESR probing of macromolecules: spin-labeling of the active sites of the proteolytic serine enzymes.
mesh_terms: D000818:Animals; D001665:Binding Sites; D001769:Blood; D002417:Cattle; D002802:Cholinesterases / Q000032:analysis; D002918:Chymotrypsin / Q000032:analysis; D004578:Electron Spin Resonance Spectroscopy; D004912:Erythrocytes / Q000201:enzymology; D004950:Esterases / Q000032:analysis*; D005459:Fluorides; D006736:Horses; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D063065:Organophosphonates; D010196:Pancreatic Elastase / Q000032:analysis; D010447:Peptide Hydrolases / Q000032:analysis*; D011485:Protein Binding; D011487:Protein Conformation; D012694:Serine; D013381:Subtilisins / Q000032:analysis; D013917:Thrombin / Q000032:analysis; D014361:Trypsin Inhibitors
chemical_list: D063065:Organophosphonates; D014361:Trypsin Inhibitors; D012694:Serine; D004950:Esterases; D002802:Cholinesterases; D010447:Peptide Hydrolases; D013381:Subtilisins; D002918:Chymotrypsin; D010196:Pancreatic Elastase; D013917:Thrombin; D005459:Fluorides