Kelker, N E Selection for genetically repressible (ArgR+) strains of Escherichia coli K12 from genetically derepressed (ArgR-) mutants using acetylnorvaline. [electronic resource] - Molecular & general genetics : MGG 1974 - 131-6 p. digital Publication Type: Journal Article ISSN: 0026-8925 Standard No.: 10.1007/BF00272178 doi Subjects--Topical Terms: Amidohydrolases--metabolismEnzyme RepressionEscherichia coli--enzymologyGenetics, MicrobialMolecular BiologyMutationOrnithineRecombination, GeneticSpecies SpecificityTransduction, GeneticValine--analogs & derivatives