title: Polypeptide products of nonsense mutations. I. Termination fragments from nonsense mutations in the Z gene of the lac operon of Escherichia coli.
mesh_terms: D002499:Centrifugation, Density Gradient; D002874:Chromosome Mapping; D004926:Escherichia coli / Q000378:metabolism*; D005696:Galactosidases; D008967:Molecular Biology; D008970:Molecular Weight; D009154:Mutation; D009876:Operon; D010452:Peptide Biosynthesis
chemical_list: D005696:Galactosidases