title: The twenty-first amino acid.
authors.forename: J F
authors.initials: JF
authors.lastname: Atkins
authors.forename: R F
authors.initials: RF
authors.lastname: Gesteland
mesh_terms: D001426:Bacterial Proteins / Q000737:chemistry / Q000235:genetics; D001665:Binding Sites; D003062:Codon; D018388:Codon, Terminator; D005815:Genetic Code; D009690:Nucleic Acid Conformation; D012333:RNA, Messenger / Q000737:chemistry / Q000235:genetics; D016601:RNA-Binding Proteins / Q000737:chemistry / Q000235:genetics; D017279:Selenocysteine / Q000235:genetics*
chemical_list: D001426:Bacterial Proteins; D003062:Codon; D018388:Codon, Terminator; D012333:RNA, Messenger; D016601:RNA-Binding Proteins; C121530:SECISBP2 protein, human; C061878:SelB protein, Bacteria; D017279:Selenocysteine