2008
Mammalian mitochondria have the innate ability to import tRNAs by a mechanism distinct from protein import
Rubio MA, Rinehart JJ, Krett B, Duvezin-Caubet S, Reichert AS, Söll D, Alfonzo JD. Mammalian mitochondria have the innate ability to import tRNAs by a mechanism distinct from protein import. Proceedings Of The National Academy Of Sciences Of The United States Of America 2008, 105: 9186-9191. PMID: 18587046, PMCID: PMC2453747, DOI: 10.1073/pnas.0804283105.Peer-Reviewed Original ResearchConceptsProtein importMammalian mitochondriaImport systemSubcellular RNA fractionsMitochondrial tRNA genesMitochondrial electrochemical gradientMitochondrial genomeTRNA genesTranscribed tRNAsHuman mitochondriaDefective mitochondriaProtein factorsFiber cellsHeterologous RNATRNACytosolic factorsSufficient ATPRNA fractionHuman cellsHuman diseasesProtein synthesisMitochondriaElectrochemical gradientOligonucleotide primersVitro system
2001
A Single Amidotransferase Forms Asparaginyl-tRNA and Glutaminyl-tRNA in Chlamydia trachomatis *
Raczniak G, Becker H, Min B, Söll D. A Single Amidotransferase Forms Asparaginyl-tRNA and Glutaminyl-tRNA in Chlamydia trachomatis *. Journal Of Biological Chemistry 2001, 276: 45862-45867. PMID: 11585842, DOI: 10.1074/jbc.m109494200.Peer-Reviewed Original ResearchConceptsAsn-tRNAGln-tRNAAminoacyl-tRNAOperon-like arrangementAccurate protein synthesisGlutaminyl-tRNA synthetaseGlutamyl-tRNA synthetaseAminoacyl-tRNA synthetasesAsparaginyl-tRNA synthetaseAspartyl-tRNA synthetaseGat genesAsparaginyl-tRNAGenome sequenceMost bacteriaGlutaminyl-tRNAAmidotransferaseProtein synthesisSynthetasesSynthetaseGenesAmide donorEnzymeAspGluGenome
1999
Transfer RNA identity contributes to transition state stabilization during aminoacyl-tRNA synthesis
Ibba M, Sever S, Praetorius-Ibba M, Söll D. Transfer RNA identity contributes to transition state stabilization during aminoacyl-tRNA synthesis. Nucleic Acids Research 1999, 27: 3631-3637. PMID: 10471730, PMCID: PMC148616, DOI: 10.1093/nar/27.18.3631.Peer-Reviewed Original Research
1998
Major Identity Element of Glutamine tRNAs from Bacillus subtilis and Escherichia coli in the Reaction with B. subtilis Glutamyl-tRNA Synthetase
Kim S, Söll D. Major Identity Element of Glutamine tRNAs from Bacillus subtilis and Escherichia coli in the Reaction with B. subtilis Glutamyl-tRNA Synthetase. Molecules And Cells 1998, 8: 459-465. PMID: 9749534, DOI: 10.1016/s1016-8478(23)13451-0.Peer-Reviewed Original ResearchThe Terminal Adenosine of tRNAGln Mediates tRNA-Dependent Amino Acid Recognition by Glutaminyl-tRNA Synthetase †
Liu J, Ibba M, Hong K, Söll D. The Terminal Adenosine of tRNAGln Mediates tRNA-Dependent Amino Acid Recognition by Glutaminyl-tRNA Synthetase †. Biochemistry 1998, 37: 9836-9842. PMID: 9657697, DOI: 10.1021/bi980704+.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseAmino acid recognitionEscherichia coli glutaminyl-tRNA synthetaseSequence-specific interactionsDouble-mutant cycle analysisAmino acid glutamineMutant cycle analysisApparent affinityConservative replacementsNonconservative replacementGlutamine bindingKcat/KmTyr211Biochemical studiesNoncognate tRNAsTerminal adenosineSynthetaseGlutamineSpecific interactionsCycle analysisKmAsp66AffinityTRNADramatic decrease
1997
Glutamyl-tRNA sythetase.
Freist W, Gauss D, Söll D, Lapointe J. Glutamyl-tRNA sythetase. Biological Chemistry 1997, 378: 1313-29. PMID: 9426192.Peer-Reviewed Original ResearchConceptsGlutamyl-tRNA synthetaseGlutaminyl-tRNA synthetaseAminoacyl-tRNA synthetasesNegative eubacteriaBacterial glutamyl-tRNA synthetasesATP/PPiHigh molecular mass complexesClass I aminoacyl-tRNA synthetasesCytoplasm of eukaryotesE. coli GlnRSGlutamyl-tRNA synthetasesMolecular mass complexesN-terminal halfC-terminal halfAmino acid residuesDihydrouridine (DHU) armPhylogenetic studiesSpecific amidotransferaseGlutamyl-prolylMass complexesTRNA synthetasesCognate tRNAAcid residuesAcceptor stemSynthetases
1996
tRNA-dependent asparagine formation
Curnow A, Ibba M, Söll D. tRNA-dependent asparagine formation. Nature 1996, 382: 589-590. PMID: 8757127, DOI: 10.1038/382589b0.Peer-Reviewed Original ResearchInteractions between tRNA identity nucleotides and their recognition sites in glutaminyl-tRNA synthetase determine the cognate amino acid affinity of the enzyme.
Ibba M, Hong K, Sherman J, Sever S, Söll D. Interactions between tRNA identity nucleotides and their recognition sites in glutaminyl-tRNA synthetase determine the cognate amino acid affinity of the enzyme. Proceedings Of The National Academy Of Sciences Of The United States Of America 1996, 93: 6953-6958. PMID: 8692925, PMCID: PMC38915, DOI: 10.1073/pnas.93.14.6953.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acyl-tRNA SynthetasesAnimalsBase SequenceBinding SitesCalorimetryCloning, MolecularConsensus SequenceEscherichia coliHumansKineticsModels, StructuralMolecular Sequence DataNucleic Acid ConformationProtein FoldingRecombinant ProteinsRNA, Transfer, GlnSequence Homology, Nucleic AcidConceptsGlutaminyl-tRNA synthetaseAmino acid affinityAmino acid recognitionEscherichia coli glutaminyl-tRNA synthetaseBase pairsIdentity nucleotidesProtein-RNA interactionsDiscriminator baseE. coli tryptophanyl-tRNA synthetaseAminoacyl-tRNA synthetasesSequence-specific interactionsAcid affinityRecognition sitesAbility of tRNATryptophanyl-tRNA synthetaseTRNA specificityNoncognate substratesTranslational fidelityTRNA recognitionBiochemical functionsRNA recognitionCognate tRNATRNAMajor binding siteNoncognate tRNAsGlutaminyl‐tRNA synthetase: from genetics to molecular recognition
Ibba M, Hong K, Söll D. Glutaminyl‐tRNA synthetase: from genetics to molecular recognition. Genes To Cells 1996, 1: 421-427. PMID: 9078373, DOI: 10.1046/j.1365-2443.1996.d01-255.x.Peer-Reviewed Original ResearchConceptsEscherichia coli glutaminyl-tRNA synthetaseMajority of tRNAsCorrect amino acidGlutaminyl-tRNA synthetaseAminoacyl-tRNA synthetasesSequence-specific interactionsAmino acid recognitionEfficiency of aminoacylationGenetic codeTRNA selectionGlnRTRNAAmino acidsNoncognate tRNAsCellular viabilityStructural studiesMolecular recognitionSynthetasesAminoacylationComplex displaysGeneticsSynthetaseGlutamineMechanismViabilityTransfer RNA‐dependent cognate amino acid recognition by an aminoacyl‐tRNA synthetase.
Hong K, Ibba M, Weygand‐Durasevic I, Rogers M, Thomann H, Söll D. Transfer RNA‐dependent cognate amino acid recognition by an aminoacyl‐tRNA synthetase. The EMBO Journal 1996, 15: 1983-1991. PMID: 8617245, PMCID: PMC450117, DOI: 10.1002/j.1460-2075.1996.tb00549.x.Peer-Reviewed Original ResearchConceptsAmino acid recognitionEscherichia coli glutaminyl-tRNA synthetaseAccuracy of aminoacylationProtein-RNA interactionsRole of tRNAGlutaminyl-tRNA synthetaseAmino acid affinityCharacterization of mutantsAminoacyl-tRNA synthetaseAmino acid activationSpecific interactionsSubstrate recognitionEnzyme active siteGlnRActive siteAcceptor stemTRNAAminoacylationAcid affinityPosition 235TerminusSynthetaseObserved roleGlnTRNAGlnAminoacyl-tRNA Synthetases Optimize Both Cognate tRNA Recognition and Discrimination against Noncognate tRNAs †
Sherman J, Söll D. Aminoacyl-tRNA Synthetases Optimize Both Cognate tRNA Recognition and Discrimination against Noncognate tRNAs †. Biochemistry 1996, 35: 601-607. PMID: 8555233, DOI: 10.1021/bi951602b.Peer-Reviewed Original ResearchConceptsTRNA recognitionNoncognate tRNAsEscherichia coli glutaminyl-tRNA synthetaseWild-type GlnRSGlutaminyl-tRNA synthetaseAminoacyl-tRNA synthetasesNucleic acid interactionsGlutamine tRNAFirst base pairMutational analysisSpecific proteinsTRNAGlnRSequence preferenceMutantsBase pairsAcid interactionsDecreased affinityVivoTRNAGlnAffinitySynthetasesProteinSynthetaseCrystal structure
1995
Divergence of glutamate and glutamine aminoacylation pathways: Providing the evolutionary rationale for mischarging
Rogers K, Söll D. Divergence of glutamate and glutamine aminoacylation pathways: Providing the evolutionary rationale for mischarging. Journal Of Molecular Evolution 1995, 40: 476-481. PMID: 7783222, DOI: 10.1007/bf00166615.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseGlutamine tRNAEukaryotic organismsProkaryotic organismsGln-tRNAGlnHorizontal gene transfer eventsGene transfer eventsGlutaminyl-tRNA synthetasesGram-negative eubacteriaGlutamyl-tRNA synthetaseAminoacyl-tRNA synthetasesAminoacyl-tRNA synthetaseFamily of enzymesEukaryotic organellesPool of glutamateAminoacyl-tRNATRNADifferent cellular mechanismsEvolutionary rationaleProtein synthesisOrganismsAmino acidsTransfer eventsCellular mechanismsSynthetaseAminoacylation of transfer RNAs with 2-thiouridine derivatives in the wobble position of the anticodon
Rogers K, Crescenzo A, Söll D. Aminoacylation of transfer RNAs with 2-thiouridine derivatives in the wobble position of the anticodon. Biochimie 1995, 77: 66-74. PMID: 7541255, DOI: 10.1016/0300-9084(96)88106-5.Peer-Reviewed Original ResearchConceptsEvolution of specificityPost-transcriptional modificationsAnticodon of tRNAAminoacyl-tRNA synthetasesTranslational regulationTransfer RNAWobble positionWobble baseLysine tRNATRNAEscherichia coliAnticodonAminoacylationFirst positionSynthetasesRNAColiRegulationGlutamineModificationDiscoveryGlutamateSubstrate selection by aminoacyl-tRNA synthetases.
Ibba M, Thomann H, Hong K, Sherman J, Weygand-Durasevic I, Sever S, Stange-Thomann N, Praetorius M, Söll D. Substrate selection by aminoacyl-tRNA synthetases. Nucleic Acids Symposium Series 1995, 40-2. PMID: 8643392.Peer-Reviewed Original Research
1994
Identity switches between tRNAs aminoacylated by class I glutaminyl- and class II aspartyl-tRNA synthetases.
Frugier M, Söll D, Giegé R, Florentz C. Identity switches between tRNAs aminoacylated by class I glutaminyl- and class II aspartyl-tRNA synthetases. Biochemistry 1994, 33: 9912-21. PMID: 8060999, DOI: 10.1021/bi00199a013.Peer-Reviewed Original ResearchConceptsAminoacyl-tRNA synthetasesIdentity nucleotidesHigh-resolution X-ray structuresAminoacyl-tRNA synthetase complexGlutaminyl-tRNA synthetaseAspartyl-tRNA synthetasesAspartyl-tRNA synthetaseGlutamine identityCognate tRNATRNA structureTRNA moleculesTRNAAminoacylation specificitySynthetase complexSpecific aminoacylationConformational changesSynthetasesEscherichia coliYeastSynthetaseNucleotidesE. coliX-ray structureComplex formationColiConnecting Anticodon Recognition with the Active Site of Escherichia coli Glutaminyl-tRNA Synthetase
Weygand-Duraševic I, Rogers M, Söll D. Connecting Anticodon Recognition with the Active Site of Escherichia coli Glutaminyl-tRNA Synthetase. Journal Of Molecular Biology 1994, 240: 111-118. PMID: 8027995, DOI: 10.1006/jmbi.1994.1425.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseAnticodon recognitionMutant enzymesEscherichia coli glutaminyl-tRNA synthetaseOpal suppressor tRNASpecificity constantMutant gene productsWild-type enzymeAmino acid loopExtensive conformational changesActive siteNumber of mutationsSuppressor tRNAGene productsGlnRPathways of communicationSaturation mutagenesisTRNAAcceptor stemAcid loopGenetic selectionConformational changesAnticodonPoor substrateAminoacylation
1993
Selection of a ‘minimal’ glutaminyl‐tRNA synthetase and the evolution of class I synthetases.
Schwob E, Söll D. Selection of a ‘minimal’ glutaminyl‐tRNA synthetase and the evolution of class I synthetases. The EMBO Journal 1993, 12: 5201-5208. PMID: 7505222, PMCID: PMC413784, DOI: 10.1002/j.1460-2075.1993.tb06215.x.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acyl-tRNA SynthetasesBacterial ProteinsBase SequenceBinding SitesBiological EvolutionEscherichia coliModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein Structure, TertiaryRNA, BacterialRNA, Transfer, GlnRNA, Transfer, SerStructure-Activity RelationshipTransfer RNA AminoacylationConceptsGlutaminyl-tRNA synthetaseAminoacyl-tRNA synthetasesEscherichia coli glutaminyl-tRNA synthetaseClass I aminoacyl-tRNA synthetasesNew recognition specificitiesNon-catalytic domainSubstrate recognition propertiesNon-cognate tRNAsRecognition of tRNACommon ancestorSequence motifsAmber suppressorGenetic codeTRNA substratesCatalytic coreGlnRTRNARecognition specificityDistinct domainsEnzymatic activityElaborate relationshipSynthetasesSpecific roleClass ISynthetaseDiscrimination among tRNAs intermediate in glutamate and glutamine acceptor identity.
Rogers K, Söll D. Discrimination among tRNAs intermediate in glutamate and glutamine acceptor identity. Biochemistry 1993, 32: 14210-9. PMID: 7505112, DOI: 10.1021/bi00214a021.Peer-Reviewed Original ResearchAmino Acyl-tRNA SynthetasesAnticodonBase SequenceBiological EvolutionEscherichia coliGlutamate-tRNA LigaseHydrogen BondingKineticsMolecular Sequence DataNucleic Acid ConformationRNA, BacterialRNA, Transfer, GlnRNA, Transfer, GluStructure-Activity RelationshipSubstrate SpecificityTransfer RNA AminoacylationAcceptor end binding domain interactions ensure correct aminoacylation of transfer RNA.
Weygand-Durasević I, Schwob E, Söll D. Acceptor end binding domain interactions ensure correct aminoacylation of transfer RNA. Proceedings Of The National Academy Of Sciences Of The United States Of America 1993, 90: 2010-2014. PMID: 7680483, PMCID: PMC46010, DOI: 10.1073/pnas.90.5.2010.Peer-Reviewed Original ResearchConceptsAmber suppressor tRNASuppressor tRNAEscherichia coli glutaminyl-tRNA synthetaseAcceptor stemAccuracy of aminoacylationGlutaminyl-tRNA synthetaseWild-type enzymeNoncognate complexGlnR mutantTRNA specificityArg-130Amber mutationTransfer RNASuch mutantsMutant enzymesCritical residuesDomain contributesDomain interactionsRecognition specificityTRNAGlu-131MutantsNoncognate tRNAsGlnRCorrect aminoacylationSelectivity and specificity in the recognition of tRNA by E coli glutaminyl-tRNA synthetase
Rogers M, Weygand-Durašević I, Schwob E, Sherman J, Rogers K, Adachi T, Inokuchi H, Söll D. Selectivity and specificity in the recognition of tRNA by E coli glutaminyl-tRNA synthetase. Biochimie 1993, 75: 1083-1090. PMID: 8199243, DOI: 10.1016/0300-9084(93)90007-f.Peer-Reviewed Original ResearchConceptsOpal suppressor tRNAGlutaminyl-tRNA synthetaseAcceptor stem recognitionSuppressor tRNAEscherichia coli glutaminyl-tRNA synthetaseGenetic selectionAmber suppressor tRNAExtensive mutational analysisRecognition of tRNARNA contactsTRNA transcriptsRelaxed specificityMutational analysisTRNAGlnRAcceptor stemExtensive proteinIndividual functional groupsMutantsSpecific recognitionAnticodonAminoacylationSynthetaseIdentity elementSynthetases