title: Regularity of gene arrangement among multigene operons and its implications for the genesis of prokaryotic genes.
mesh_terms: D004798:Enzymes / Q000235:genetics*; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D005798:Genes, Bacterial; D009876:Operon; D012486:Salmonella typhimurium / Q000235:genetics*
chemical_list: D004798:Enzymes