1985
Two control systems modulate the level of glutaminyl-tRNA synthetase in Escherichia coli
Cheung A, Watson L, Söll D. Two control systems modulate the level of glutaminyl-tRNA synthetase in Escherichia coli. Journal Of Bacteriology 1985, 161: 212-218. PMID: 2578447, PMCID: PMC214858, DOI: 10.1128/jb.161.1.212-218.1985.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseEscherichia coli glutaminyl-tRNA synthetaseBeta-galactosidase structural genePost-transcriptional regulationStructural geneTranscriptional controlRegulatory mutationsTranslational levelGln-10Metabolic regulationEscherichia coliSynthetaseVivo expressionTranscriptionGrowth conditionsRegulationMRNA levelsRegulatory studiesSynthetase levelsMutationsGlnGrowth rateGenesPromoterColi
1977
Regulation of biosynthesis of aminoacyl-tRNA synthetases and of tRNA in Escherichia coli II. Isolation of regulatory mutants affecting leucyl-tRNA synthetase levels
LaRossa R, Vögeli G, Low K, Söll D. Regulation of biosynthesis of aminoacyl-tRNA synthetases and of tRNA in Escherichia coli II. Isolation of regulatory mutants affecting leucyl-tRNA synthetase levels. Journal Of Molecular Biology 1977, 117: 1033-1048. PMID: 342703, DOI: 10.1016/s0022-2836(77)80011-9.Peer-Reviewed Original ResearchConceptsLeucyl-tRNA synthetaseThermolabile leucyl-tRNA synthetaseRegulation of biosynthesisDistinct genetic lociAminoacyl-tRNA synthetasesEscherichia coli IIOperator-promoter regionStructural geneRegulatory mutantsGenetic lociEscherichia coli strainsSuch revertantsSpontaneous revertantsThermolabile enzymeLociSynthetaseColi strainsRevertantsSynthetase levelsLeuTRNAMutantsSynthetasesLeuXBiosynthesisRegulation of biosynthesis of aminoacyl-tRNA synthetases and of tRNA in Escherichia coli III. Biochemical characterization of regulatory mutants affecting leucyl-tRNA synthetase levels
LaRossa R, Mao J, Low K, Söll D. Regulation of biosynthesis of aminoacyl-tRNA synthetases and of tRNA in Escherichia coli III. Biochemical characterization of regulatory mutants affecting leucyl-tRNA synthetase levels. Journal Of Molecular Biology 1977, 117: 1049-1059. PMID: 342704, DOI: 10.1016/s0022-2836(77)80012-0.Peer-Reviewed Original ResearchConceptsAminoacyl-tRNA synthetasesLeucyl-tRNA synthetaseProtein synthesisRegulation of biosynthesisEscherichia coli IIIIsoacceptor familiesIlv operonRegulatory mutantsSteady-state levelsAmount of tRNALeu operonBiochemical characterizationCellular concentrationSynthetasesEscherichia coliOperonControl elementsTRNASynthetaseSynthetase levelsMutationsDerepressionPpGppMutantsPppGpp