title: The evolutionary origin of toxic proteins.
mesh_terms: D000595:Amino Acid Sequence; D005075:Biological Evolution; D004798:Enzymes / Q000032:analysis; D011506:Proteins / Q000502:physiology*; D014118:Toxins, Biological
chemical_list: D004798:Enzymes; D011506:Proteins; D014118:Toxins, Biological