title: DNA degradation in an amber mutant of Escherichia coli K12 affecting DNA ligase and viability.
mesh_terms: D000483:Alleles; D002470:Cell Survival; D002499:Centrifugation, Density Gradient; D004260:DNA Repair; D004269:DNA, Bacterial / Q000378:metabolism*; D004926:Escherichia coli / Q000201:enzymology / Q000378:metabolism*; D005808:Genes, Recessive; D005827:Genetics, Microbial; D005838:Genotype; D007700:Kinetics; D009154:Mutation; D011118:Polynucleotide Ligases; D013045:Species Specificity
chemical_list: D004269:DNA, Bacterial; D011118:Polynucleotide Ligases