title: The exponential model for a regulatory enzyme: its extension to describe catastrophic changes in function.
mesh_terms: D001052:Apoferritins / Q000378:metabolism; D004798:Enzymes / Q000378:metabolism*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008024:Ligands; D008954:Models, Biological; D011487:Protein Conformation
chemical_list: D004798:Enzymes; D008024:Ligands; D001052:Apoferritins