2022
Ancestral archaea expanded the genetic code with pyrrolysine
Guo LT, Amikura K, Jiang HK, Mukai T, Fu X, Wang YS, O’Donoghue P, Söll D, Tharp JM. Ancestral archaea expanded the genetic code with pyrrolysine. Journal Of Biological Chemistry 2022, 298: 102521. PMID: 36152750, PMCID: PMC9630628, DOI: 10.1016/j.jbc.2022.102521.Peer-Reviewed Original ResearchConceptsAminoacylation efficiencyGenetic code expansionDomains of lifePyrrolysyl-tRNA synthetaseTRNA-binding domainFull-length enzymeNoncanonical amino acidsAmino acid substratesMolecular phylogenyDiverse archaeaCoevolutionary historyTRNA sequencesGenetic codeCode expansionDiscriminator basesMethanogenic archaeaMethanosarcina mazeiPylRSSubstrate spectrumTRNAArchaeaMultiple organismsLiving cellsAcid substratesAmino acids
1986
Functional complementation between mutations in a yeast suppressor tRNA gene reveals potential for evolution of tRNA sequences.
Willis I, Nichols M, Chisholm V, Söll D, Heyer W, Szankasi P, Amstutz H, Munz P, Kohli J. Functional complementation between mutations in a yeast suppressor tRNA gene reveals potential for evolution of tRNA sequences. Proceedings Of The National Academy Of Sciences Of The United States Of America 1986, 83: 7860-7864. PMID: 3532123, PMCID: PMC386822, DOI: 10.1073/pnas.83.20.7860.Peer-Reviewed Original ResearchConceptsMutant tRNA precursorS. pombe genesSuppressor tRNA geneNucleotide sequence evolutionRNA processing levelRNase P cleavagePombe geneTRNA genesFunctional complementationComplementation eventsS. pombeCycle of inactivationTRNA sequencesTRNA precursorsSequence evolutionSaccharomyces cerevisiaeS. cerevisiaePombe strainSchizosaccharomyces pombe strainStructural domainsDifferential expressionSuppressor functionP cleavageGenesSuppressor
1982
Eukaryotic tRNA gene transcription is controlled by signals within and outside the mature coding sequence.
DeFranco D, Dingermann T, Johnson D, Sharp S, Söll D. Eukaryotic tRNA gene transcription is controlled by signals within and outside the mature coding sequence. Princess Takamatsu Symposia 1982, 12: 63-72. PMID: 7166550.Peer-Reviewed Original ResearchConceptsTRNA genesMature coding sequenceTranscriptional repressionTRNA sequencesControl regionCoding sequenceEukaryotic tRNA gene transcriptionDrosophila tRNAArg geneSecond control regionEukaryotic tRNA genesDrosophila tRNA genesTRNA gene transcriptionMature tRNA sequencesInitiation of transcriptionNuclease Bal 31TRNAArg geneMature tRNAPoor transcriptional activityDeletion analysisGene transcriptionNucleotides 8D-loopTranscriptional activityPromoter regionBAL-31
1980
Dimeric transfer RNA precursors in S. pombe
Mao J, Schmidt O, Söll D. Dimeric transfer RNA precursors in S. pombe. Cell 1980, 21: 509-516. PMID: 7407924, DOI: 10.1016/0092-8674(80)90488-2.Peer-Reviewed Original ResearchConceptsTRNA genesNucleotide intronRNA precursorsDNA fragmentsNuclear extractsNucleotide spacerPrimary transcription productTransfer RNA precursorsNucleotide leader sequenceS. pombeTRNA sequencesTrailer sequencesRNA initiationLeader sequenceTRNA moleculesTranscription productsEnzymatic stepsSequence analysisRNA analysisXenopus oocytesGenesEndonuclease cleavageIntronsTerminusSequence