title: Evolution of catalytic function.
authors: University of California, Berkeley 94720.
authors: D E
authors: DE
authors: Koshland
mesh_terms: D001665:Binding Sites; D005075:Biological Evolution; D002384:Catalysis; D004798:Enzymes / Q000378:metabolism*; D012313:RNA / Q000235:genetics*
chemical_list: D004798:Enzymes; D012313:RNA