1996
Genetic analysis of functional connectivity between substrate recognition domains ofEscherichia coli glutaminyl-tRNA synthetase
Kitabatake M, Inokuchi H, Ibba M, Hong K, Söll D. Genetic analysis of functional connectivity between substrate recognition domains ofEscherichia coli glutaminyl-tRNA synthetase. Molecular Genetics And Genomics 1996, 252: 717-722. PMID: 8917315, DOI: 10.1007/bf02173978.Peer-Reviewed Original ResearchConceptsGlutaminyl-tRNA synthetaseWild-type enzymeSubstrate discriminationDouble mutantSubstrate recognition domainThree-dimensional structureAnticodon recognitionSubstrate specificityTRNA bindingGenetic analysisAcceptor stemRecognition domainC171Ternary complexExtensive interactionsMutantsPotential involvementG mutationEnzymeHigh KmSynthetaseMutationsActive siteE222GlnR
1994
Connecting 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 substrateAminoacylationFunctional communication in the recognition of tRNA by Escherichia coli glutaminyl-tRNA synthetase.
Rogers M, Adachi T, Inokuchi H, Söll D. Functional communication in the recognition of tRNA by Escherichia coli glutaminyl-tRNA synthetase. Proceedings Of The National Academy Of Sciences Of The United States Of America 1994, 91: 291-295. PMID: 7506418, PMCID: PMC42933, DOI: 10.1073/pnas.91.1.291.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAmino Acyl-tRNA SynthetasesAnticodonBacterial ProteinsEscherichia coliGenes, SuppressorModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein Structure, TertiaryRNA, BacterialRNA, TransferStructure-Activity RelationshipSubstrate SpecificityTransfer RNA AminoacylationConceptsEscherichia coli glutaminyl-tRNA synthetaseGlutaminyl-tRNA synthetaseLys-317Genetic selectionOpal suppressorMutant enzymesWild-type GlnRSAsp-235Anticodon-binding domainSingle amino acid changeSite-directed mutagenesisNumber of mutantsAmino acid changesRecognition of tRNAGlnR mutantAnticodon recognitionAdditional mutantsGln mutantGlnRMutantsAcid changesBase pairsSpecificity constantAminoacylationTRNA