title: Origin of the genetic code and specificity of tRNA aminoacylation. A testable model.
mesh_terms: D000926:Anticodon / Q000235:genetics; D005075:Biological Evolution; D004926:Escherichia coli / Q000235:genetics; D005815:Genetic Code; D008718:Methionine-tRNA Ligase / Q000378:metabolism; D008957:Models, Genetic; D009154:Mutation; D012343:RNA, Transfer / Q000235:genetics*; D012346:RNA, Transfer, Amino Acyl / Q000235:genetics*; D013329:Structure-Activity Relationship
chemical_list: D000926:Anticodon; D012346:RNA, Transfer, Amino Acyl; D012343:RNA, Transfer; D008718:Methionine-tRNA Ligase