Ephrati-Elizur, E A mutation in a new gene of Escherichia coli, psu, requires secondary mutations for survival: psu mutants express a pleiotropic suppressor phenotype. [electronic resource] - Journal of bacteriology Jan 1993 - 207-13 p. digital Publication Type: Journal Article ISSN: 0021-9193 Standard No.: 10.1128/jb.175.1.207-213.1993 doi Subjects--Topical Terms: Ampicillin Resistance--geneticsChromosome MappingCloning, MolecularDNA Topoisomerases, Type II--geneticsDose-Response Relationship, DrugEscherichia coli--drug effectsGenes, Bacterial--geneticsMutagenesisMutation--geneticsNovobiocin--pharmacologyNucleic Acid ConformationOxolinic Acid--pharmacologyPhenotypeSuppression, Genetic--drug effectsTransformation, Genetic