2000
A Mutant Escherichia coli Tyrosyl-tRNA Synthetase Utilizes the Unnatural Amino Acid Azatyrosine More Efficiently than Tyrosine*
Hamano-Takaku F, Iwama T, Saito-Yano S, Takaku K, Monden Y, Kitabatake M, Söll D, Nishimura S. A Mutant Escherichia coli Tyrosyl-tRNA Synthetase Utilizes the Unnatural Amino Acid Azatyrosine More Efficiently than Tyrosine*. Journal Of Biological Chemistry 2000, 275: 40324-40328. PMID: 11006270, DOI: 10.1074/jbc.m003696200.Peer-Reviewed Original ResearchConceptsUnnatural amino acidsTyrosyl-tRNA synthetaseEscherichia coli tyrosyl-tRNA synthetasePosition 130Amino acidsVivo protein biosynthesisE. coli cellsAminoacyl-tRNA formationSingle point mutationTyrRS mutantsCellular proteinsProtein biosynthesisTYR geneMutant enzymesPlasmid libraryReplacement of phenylalanineColi cellsImmense potentialNormal phenotypeEfficient productionPoint mutationsTyrRSProteinPolymerase chain reaction techniqueSynthetaseTransfer RNA Identity Change in Anticodon Variants of E. coli tRNAPhe in Vivo
Kim H, Kim I, Söll D, Lee Y. Transfer RNA Identity Change in Anticodon Variants of E. coli tRNAPhe in Vivo. Molecules And Cells 2000, 10: 76-82. PMID: 10774751, DOI: 10.1007/s10059-000-0076-7.Peer-Reviewed Original ResearchConceptsMutant tRNA genesMutant tRNAsTRNA genesAnticodon sequenceAnticodon mutantsHost viabilityE. coliAmino acidsMost aminoacyl-tRNA synthetasesOpal stop codonAminoacyl-tRNA synthetasesSite-directed mutagenesisE. coli tRNAMajor recognition elementAnticodon variantsSuch tRNAsTRNAStop codonAminoacylation specificityAnticodonSimilarity dendrogramVivo evolutionGenesAcceptor specificityAnticodon change
1996
Homologous Expression and Purification of Mutants of an Essential Protein by Reverse Epitope-Tagging
Thomann H, Ibba M, Hong K, Söll D. Homologous Expression and Purification of Mutants of an Essential Protein by Reverse Epitope-Tagging. Bio/Technology 1996, 14: 50-55. PMID: 9636312, DOI: 10.1038/nbt0196-50.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseMutant enzymesEssential enzymeGlutaminyl-tRNA synthetasesWild-type proteinExtrachromosomal genetic elementsEpitope taggingEssential proteinsMutant proteinsHomologous expressionReporter epitopeCell-free extractsGenetic elementsNormal phenotypeBiochemical studiesEnzymatic activityEnzymeProteinSynthetaseProtein contaminationExpressionPurificationMutantsSynthetasesNovel strategy
1992
Organization and nucleotide sequence of the glutamine synthetase (glnA) gene from Lactobacillus delbrueckii subsp. bulgaricus
Ishino Y, Morgenthaler P, Hottinger H, Söll D. Organization and nucleotide sequence of the glutamine synthetase (glnA) gene from Lactobacillus delbrueckii subsp. bulgaricus. Applied And Environmental Microbiology 1992, 58: 3165-3169. PMID: 1359838, PMCID: PMC183065, DOI: 10.1128/aem.58.9.3165-3169.1992.Peer-Reviewed Original ResearchConceptsOpen reading frameGlnA geneReading frameGlnA gene expressionGlutamine synthetase geneL. delbrueckii subspDNA sequence analysisMaxicell methodLactobacillus delbrueckii subspDelbrueckii subspGlnR geneDeletion strainNegative eubacteriaPositive eubacteriaSynthetase geneExtensive homologyRepressor geneNucleotide sequencePresent upstreamGene expressionBamHI fragmentUnknown functionSequence analysisClostridium acetobutylicumGenesGlutamyl-tRNA reductase from Escherichia coli and Synechocystis 6803. Gene structure and expression.
Verkamp E, Jahn M, Jahn D, Kumar A, Söll D. Glutamyl-tRNA reductase from Escherichia coli and Synechocystis 6803. Gene structure and expression. Journal Of Biological Chemistry 1992, 267: 8275-8280. PMID: 1569081, DOI: 10.1016/s0021-9258(18)42438-6.Peer-Reviewed Original ResearchMeSH KeywordsAldehyde OxidoreductasesAmino Acid SequenceBase SequenceChromatography, GelCyanobacteriaEscherichia coliGene ExpressionGenes, BacterialGenes, FungalGenetic Complementation TestMolecular Sequence DataOpen Reading FramesPlasmidsRestriction MappingSaccharomyces cerevisiaeSequence Homology, Nucleic AcidConceptsGlutamyl-tRNA reductaseHemA geneAmino acid sequenceHemA proteinGluTR activitySynechocystis 6803Acid sequenceE. coliGlutamate-1-semialdehyde aminotransferaseHemA gene productEscherichia coliCyanobacterium Synechocystis spOpen reading frameEnterobacterium Escherichia coliDNA sequence analysisFunctional complementationGene structureGlu-tRNAGel filtration experimentsPCC 6803Synechocystis spGlutamyl-tRNAAcid polypeptideReading frameALA formation
1991
delta-Aminolevulinic acid dehydratase deficiency can cause delta-aminolevulinate auxotrophy in Escherichia coli
O'Neill G, Thorbjarnardóttir S, Michelsen U, Pálsson S, Söll D, Eggertsson G. delta-Aminolevulinic acid dehydratase deficiency can cause delta-aminolevulinate auxotrophy in Escherichia coli. Journal Of Bacteriology 1991, 173: 94-100. PMID: 1987138, PMCID: PMC207161, DOI: 10.1128/jb.173.1.94-100.1991.Peer-Reviewed Original ResearchConceptsALA dehydratase activityEscherichia coliWild-type geneClasses of mutantsDNA sequence analysisAminoglycoside antibiotic kanamycinHeme biosynthetic pathwayALA biosynthesisWild-type DNAAuxotrophic phenotypeComplementation studiesDehydratase activityHemB geneBiosynthetic pathwayPositive regulationALA formationSame geneMutantsPenicillin enrichmentSequence analysisGenesAntibiotic kanamycinDiffusible productHemB mutantEnzymatic activity
1989
A selection for mutants of the RNA polymerase III transcription apparatus: PCF1 stimulates transcription of tRNA and 5S RNA genes.
Willis I, Schmidt P, Söll D. A selection for mutants of the RNA polymerase III transcription apparatus: PCF1 stimulates transcription of tRNA and 5S RNA genes. The EMBO Journal 1989, 8: 4281-4288. PMID: 2686985, PMCID: PMC401634, DOI: 10.1002/j.1460-2075.1989.tb08614.x.Peer-Reviewed Original ResearchMeSH KeywordsBase SequenceCloning, MolecularDNA-Directed RNA PolymerasesGene ExpressionGenes, DominantGenes, FungalKineticsMolecular Sequence DataMutationOligonucleotide ProbesPlasmidsPromoter Regions, GeneticRNA Polymerase IIIRNA, RibosomalRNA, Ribosomal, 5SRNA, TransferSaccharomyces cerevisiaeSaccharomycetalesSchizosaccharomycesSelection, GeneticSuppression, GeneticTemplates, GeneticTranscription, GeneticConceptsTRNA genesMutant strainTranscription of mutantsTranscription of tRNARNA polymerase IIISuppressor tRNA geneDominant mutant geneWild-type strainStable complexesTranscription apparatusRNA genesStable complex formationUpstream geneTRNA suppressorsPositive regulatorSteady-state levelsComplex assemblyGenetic approachesPolymerase IIIGene transcriptionInternal promoterMutant geneTime-course experimentsTranscriptionGenes
1988
Accuracy of in Vivo Aminoacylation Requires Proper Balance of tRNA and Aminoacyl-tRNA Synthetase
Swanson R, Hoben P, Sumner-Smith M, Uemura H, Watson L, Söll D. Accuracy of in Vivo Aminoacylation Requires Proper Balance of tRNA and Aminoacyl-tRNA Synthetase. Science 1988, 242: 1548-1551. PMID: 3144042, DOI: 10.1126/science.3144042.Peer-Reviewed Original ResearchConceptsAminoacyl-tRNA synthetaseAminoacyl-tRNA synthetasesProtein biosynthesisAccuracy of aminoacylationCognate aminoacyl-tRNA synthetaseAmber suppressorVivo aminoacylationGln-tRNA synthetaseCognate tRNATRNAExquisite specificityAminoacylationSynthetaseAccurate aminoacylationSynthetasesBiosynthesisIntracellular concentrationRelative levelsProper balanceComplexed formsSuppressorEscherichiaGln
1987
Allele-specific complementation of an Escherichia coli leuB mutation by a Lactobacillus bulgaricus tRNA gene
Hottinger H, Ohgi T, Zwahlen M, Dhamija S, Söll D. Allele-specific complementation of an Escherichia coli leuB mutation by a Lactobacillus bulgaricus tRNA gene. Gene 1987, 60: 75-83. PMID: 3326787, DOI: 10.1016/0378-1119(87)90215-0.Peer-Reviewed Original ResearchConceptsTRNA genesCopy numberWild-type formE. coli promotersHigh copy numberGene copy numberLeuB mutationClone bankLeucine prototrophyLow copy numberMissense suppressionNucleotide sequenceSerine tRNATerminator elementsGenesRestoration of activityTRNAEscherichia coliAmino acidsGene allelesExtra armE. coli
1985
First identification of an amber nonsense mutation in Schizosaccharomyces pombe: major differences in the efficiency of homologous versus heterologous yeast suppressor tRNA genes
Krupp G, Thuriaux P, Willis I, Gamulin V, Söll D. First identification of an amber nonsense mutation in Schizosaccharomyces pombe: major differences in the efficiency of homologous versus heterologous yeast suppressor tRNA genes. Molecular Genetics And Genomics 1985, 201: 82-87. PMID: 3903436, DOI: 10.1007/bf00397990.Peer-Reviewed Original ResearchConceptsS. pombeAmber allelesAmber suppressor allelesFission yeast SchizosaccharomycesS. pombe transformantsAmber suppressor tRNANonsense mutationAmber nonsense mutationsSuppressor tRNA geneTRNA genesFission yeastYeast SchizosaccharomycesSchizosaccharomyces pombeSuppressor allelesTRP1 locusAmber mutationSuppressor tRNAPombeNonsense allelesNorthern analysisNitrosoguanidine mutagenesisOchre alleleGenesFirst identificationTRNASerLeucine tRNA family of Escherichia coli: nucleotide sequence of the supP(Am) suppressor gene
Thorbjarnardóttir S, Dingermann T, Rafnar T, Andrésson O, Söll D, Eggertsson G. Leucine tRNA family of Escherichia coli: nucleotide sequence of the supP(Am) suppressor gene. Journal Of Bacteriology 1985, 161: 219-222. PMID: 2981802, PMCID: PMC214859, DOI: 10.1128/jb.161.1.219-222.1985.Peer-Reviewed Original ResearchConceptsSuppressor allelesLeuX geneAmber suppressor allelesMature coding sequenceLeucyl-tRNA synthetaseSingle base changeTRNA familiesCAA anticodonBox sequenceTermination signalDNA sequencesNucleotide sequenceBacteriophage T4Coding sequenceAminoacyl stemSuppressor geneLoop regionTRNABase changesEscherichia coliGenesE. coliSequenceColiAlleles
1984
Transcription factor binding is limited by the 5'-flanking regions of a Drosophila tRNAHis gene and a tRNAHis pseudogene.
Cooley L, Schaack J, Burke DJ, Thomas B, Söll D. Transcription factor binding is limited by the 5'-flanking regions of a Drosophila tRNAHis gene and a tRNAHis pseudogene. Molecular And Cellular Biology 1984, 4: 2714-2722. PMID: 6570190, PMCID: PMC369281, DOI: 10.1128/mcb.4.12.2714.Peer-Reviewed Original ResearchConceptsDrosophila Kc cell extractHeLa cell extractsCell extractsReal genesStable complex formationControl regionDeletion analysisStable transcription complex formationRecombinant clonesDrosophila tRNAArg geneTRNA gene clusterTranscription complex formationBona fide genesInternal control regionTranscription factor bindingSame DNA strandComplex formationTranscription control regionsConsecutive base pairsTRNAHis geneTRNAArg geneFide genesGene clusterTranscription factorsFactor binding
1983
Each element of the Drosophila tRNA Arg gene split promoter directs transcription in Xenopus oocytes
Sharp S, Dingermann T, Schaack J, Sharp J, Burke D, DeRobertis E, Söll D. Each element of the Drosophila tRNA Arg gene split promoter directs transcription in Xenopus oocytes. Nucleic Acids Research 1983, 11: 8677-8690. PMID: 6561520, PMCID: PMC326616, DOI: 10.1093/nar/11.24.8677.Peer-Reviewed Original ResearchConceptsD-control regionDrosophila tRNAArg geneTRNAArg geneEukaryotic tRNA gene transcriptionXenopus oocytesRNA polymerase III transcription factorT-control regionEukaryotic tRNA genesTRNA gene transcriptionIntragenic control regionTranscription initiation siteSpecific DNA sequencesTRNA genesTranscription initiationArg genesControl regionTranscription factorsGene transcriptionDNA sequencesMutant formsOocyte nucleusSequence 5Initiation siteGenesTranscriptionTranscription of eukaryotic tRNA genes in vitro. I. Analysis of control regions using a competition assay.
Sharp S, Dingermann T, Schaack J, DeFranco D, Söll D. Transcription of eukaryotic tRNA genes in vitro. I. Analysis of control regions using a competition assay. Journal Of Biological Chemistry 1983, 258: 2440-2446. PMID: 6549757, DOI: 10.1016/s0021-9258(18)32945-4.Peer-Reviewed Original ResearchConceptsT-control regionD-control regionTRNA gene transcriptionTRNAArg geneControl regionTranscription factorsCompetitive abilityDeletion mutantsGene transcriptionEukaryotic tRNA gene transcriptionDrosophila tRNAArg geneEukaryotic tRNA genesStem regionIntragenic control regionEfficiency of transcriptionTRNA genesTranscription extractTRNA productD-loopTranscription levelsWild typeTranscriptionT-loopGenesCompetition assays
1982
Nonsense suppression in Schizosaccharomyces pombe: The S. pombe Sup3-e tRNASerUGA gene is active in S. cerevisiae
Hottinger H, Pearson D, Yamao F, Gamulin V, Colley L, Cooper T, Söll D. Nonsense suppression in Schizosaccharomyces pombe: The S. pombe Sup3-e tRNASerUGA gene is active in S. cerevisiae. Molecular Genetics And Genomics 1982, 188: 219-224. PMID: 6818425, DOI: 10.1007/bf00332678.Peer-Reviewed Original ResearchEscherichia coli glutaminyl-tRNA synthetase. I. Isolation and DNA sequence of the glnS gene.
Yamao F, Inokuchi H, Cheung A, Ozeki H, Söll D. Escherichia coli glutaminyl-tRNA synthetase. I. Isolation and DNA sequence of the glnS gene. Journal Of Biological Chemistry 1982, 257: 11639-11643. PMID: 6288695, DOI: 10.1016/s0021-9258(18)33810-9.Peer-Reviewed Original ResearchArrangement of the ribosomal RNA genes in Schizosaccharomyces pombe
Barnitz J, Cramer J, Rownd R, Cooley L, Söll D. Arrangement of the ribosomal RNA genes in Schizosaccharomyces pombe. FEBS Letters 1982, 143: 129-132. PMID: 6288447, DOI: 10.1016/0014-5793(82)80288-3.Peer-Reviewed Original ResearchOrganization and nucleotide sequence of nuclear 5S rRNA genes in yellow lupin ( Lupinus lutens )
Rafalski J, Wiewiorowski M, SÖll D. Organization and nucleotide sequence of nuclear 5S rRNA genes in yellow lupin ( Lupinus lutens ). Nucleic Acids Research 1982, 10: 7635-7642. PMID: 7155897, PMCID: PMC327035, DOI: 10.1093/nar/10.23.7635.Peer-Reviewed Original ResearchThe minimum intragenic sequences required for promotion of eukaryotic tRNA gene transcription
Sharp S, Dingermann T, Söll D. The minimum intragenic sequences required for promotion of eukaryotic tRNA gene transcription. Nucleic Acids Research 1982, 10: 5393-5406. PMID: 6924209, PMCID: PMC320884, DOI: 10.1093/nar/10.18.5393.Peer-Reviewed Original ResearchConceptsD-control regionTRNA genesIntragenic control regionTranscription systemControl regionTRNAArg geneRNA synthesisGene transcriptionEukaryotic tRNA gene transcriptionHeLa cell transcription systemDrosophila tRNAArg geneT-control regionMutant tRNA genesEukaryotic tRNA genesTRNA gene transcriptionRNA polymerase IIIWild-type geneAdjacent flanking sequencesHeLa systemsMature tRNAIntragenic regionsSpecific transcriptionPolymerase IIIXenopus laevis oocytesDNA sequencesGenes for tRNA 5Lys from Drosophila melanogaster
DeFranco D, Burke K, Hayashi S, Tener G, Miller R, Söll D. Genes for tRNA 5Lys from Drosophila melanogaster. Nucleic Acids Research 1982, 10: 5799-5808. PMID: 6292853, PMCID: PMC320931, DOI: 10.1093/nar/10.19.5799.Peer-Reviewed Original Research