title: Evolution of an active-site codon in serine proteases.
authors.forename: D M
authors.initials: DM
authors.lastname: Irwin
mesh_terms: D000818:Animals; D001665:Binding Sites; D005075:Biological Evolution; D003062:Codon; D012333:RNA, Messenger; D012697:Serine Endopeptidases / Q000235:genetics*
chemical_list: D003062:Codon; D012333:RNA, Messenger; D012697:Serine Endopeptidases