title: The evolution of oligomerization.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002417:Cattle; D004167:Diphtheria Toxin / Q000737:chemistry; D004722:Endoribonucleases / Q000737:chemistry; D008954:Models, Biological; D008958:Models, Molecular; D009154:Mutation; D011487:Protein Conformation; D013329:Structure-Activity Relationship
chemical_list: D004167:Diphtheria Toxin; D004722:Endoribonucleases; C032523:ribonuclease SPL