title: On the emergence of new function in primitive proteins.
mesh_terms: D005075:Biological Evolution; D005796:Genes; D007700:Kinetics; D008954:Models, Biological; D009154:Mutation; D014176:Protein Biosynthesis; D011487:Protein Conformation; D011506:Proteins / Q000235:genetics*
chemical_list: D011506:Proteins