Interactions 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 tRNAsEscherichia coli Tryptophanyl-tRNA Synthetase Mutants Selected for Tryptophan Auxotrophy Implicate the Dimer Interface in Optimizing Amino Acid Binding †
Sever S, Rogers K, Rogers M, Carter C, Söll D. Escherichia coli Tryptophanyl-tRNA Synthetase Mutants Selected for Tryptophan Auxotrophy Implicate the Dimer Interface in Optimizing Amino Acid Binding †. Biochemistry 1996, 35: 32-40. PMID: 8555191, DOI: 10.1021/bi952103d.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceBacillus subtilisBase SequenceBinding SitesCloning, MolecularDNA PrimersEscherichia coliGenes, BacterialGeobacillus stearothermophilusHaemophilus influenzaeKineticsMacromolecular SubstancesModels, MolecularMolecular Sequence DataPolymerase Chain ReactionProtein FoldingProtein Structure, SecondaryRecombinant ProteinsRestriction MappingSequence Homology, Amino AcidTryptophanTryptophan-tRNA LigaseConceptsTryptophanyl-tRNA synthetaseDimer interfaceClass I aminoacyl-tRNA synthetasesAminoacyl-tRNA synthetasesAmino acid bindingAmino acid activationActive siteSteady-state kinetic analysisSynthetase mutantsRossmann foldApparent KmKMSKS loopTrp lociProtein structureTrpR proteinTryptophan auxotrophDimeric enzymeAuxotrophic strainsBacillus stearothermophilusAcid bindingEscherichia coliOptimal catalysisAminoacyl adenylatesMutantsMutations