2023
A conserved uORF in the ilvBNC mRNA of Corynebacterium species regulates ilv operon expression
Narunsky A, Kavita K, Panchapakesan S, Fris M, Breaker R. A conserved uORF in the ilvBNC mRNA of Corynebacterium species regulates ilv operon expression. Microbial Genomics 2023, 9: mgen001019. PMID: 37233150, PMCID: PMC10272879, DOI: 10.1099/mgen.0.001019.Peer-Reviewed Original ResearchConceptsBranched-chain amino acidsRNA motifsUpstream open reading framesTranscription attenuation mechanismStructured noncoding RNAsOpen reading frameRiboswitch classesTranscription attenuationProtein translationNoncoding RNAsOperon expressionGenetic approachesReading frameStart codonUORF translationStop codonBacterial speciesHost cellsGenesUORFsAmino acidsMotifCodonCommon mechanismCorynebacterium species
1998
An amino acid as a cofactor for a catalytic polynucleotide
Roth A, Breaker R. An amino acid as a cofactor for a catalytic polynucleotide. Proceedings Of The National Academy Of Sciences Of The United States Of America 1998, 95: 6027-6031. PMID: 9600911, PMCID: PMC27579, DOI: 10.1073/pnas.95.11.6027.Peer-Reviewed Original ResearchConceptsAmino acidsRate enhancementDramatic rate enhancementMetal ion cofactorsAbsence of enzymeGeneral base catalystSuperior polymerChemical catalysisBiological catalystsRNA cleavage reactionCatalytic potentialOrganic cofactorImidazole groupsNatural ribozymesRNA worldBase catalystChemical groupsCatalytic mechanismCatalytic DNACleavage reactionIon cofactorProtein enzymesStructural foldingSubstrate cleavageConstituent amino acids