title: Site-directed mutagenesis: generation of an extracistronic mutation in bacteriophage Q beta RNA.
mesh_terms: D001483:Base Sequence; D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D002852:Chromatography, Ion Exchange; D002874:Chromosome Mapping; D003090:Coliphages / Q000032:analysis* / Q000378:metabolism; D012321:DNA-Directed RNA Polymerases; D009154:Mutation; D012328:RNA Viruses / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis / Q000096:biosynthesis; D012265:Ribonucleotides / Q000032:analysis; D013698:Templates, Genetic
chemical_list: D012367:RNA, Viral; D012265:Ribonucleotides; D012321:DNA-Directed RNA Polymerases