title: Correlations between biological activity and the number of functional groups chemically modified.
mesh_terms: D001665:Binding Sites; D001704:Biopolymers; D004798:Enzymes / Q000378:metabolism; D006639:Histidine / Q000378:metabolism; D008956:Models, Chemical; D011734:Pyridoxaminephosphate Oxidase / Q000378:metabolism; D013329:Structure-Activity Relationship
chemical_list: D001704:Biopolymers; D004798:Enzymes; D006639:Histidine; D011734:Pyridoxaminephosphate Oxidase