title: The evolution of catalytic function.
mesh_terms: D005075:Biological Evolution; D002384:Catalysis; D004926:Escherichia coli / Q000235:genetics; D011506:Proteins / Q000235:genetics; D012313:RNA / Q000235:genetics*; D014780:Viruses / Q000235:genetics
chemical_list: D011506:Proteins; D012313:RNA