title: Selection for new codons corresponding to position 234 of the tryptophan synthetase alpha chain of Escherichia coli.
mesh_terms: D003062:Codon / Q000302:isolation & purification*; D004926:Escherichia coli / Q000235:genetics*; D005796:Genes; D005815:Genetic Code; D009154:Mutation; D014176:Protein Biosynthesis; D012333:RNA, Messenger / Q000302:isolation & purification*; D014367:Tryptophan Synthase / Q000235:genetics*
chemical_list: D003062:Codon; D012333:RNA, Messenger; D014367:Tryptophan Synthase