1999
Allosteric selection of ribozymes that respond to the second messengers cGMP and cAMP
Koizumi M, Soukup G, Kerr J, Breaker R. Allosteric selection of ribozymes that respond to the second messengers cGMP and cAMP. Nature Structural & Molecular Biology 1999, 6: 1062-1071. PMID: 10542100, DOI: 10.1038/14947.Peer-Reviewed Original ResearchConceptsRNA molecular switchGenetic control elementsMolecular recognition characteristicsEmergence of ribozymesSecond messenger cGMPRNAs exhibitAllosteric ribozymesRNA transcriptsCellular RNASelective sensorCAMP additionMolecular switchFold activationCatalytic rateRecognition characteristicsRibozymeControl elementsEffector compoundsHammerhead ribozymeChemical agentsCompoundsStructural characteristicsSpecific nucleosideNew combinatorial strategyCombinatorial strategies
1997
Examination of the catalytic fitness of the hammerhead ribozyme by in vitro selection.
Tang J, Breaker R. Examination of the catalytic fitness of the hammerhead ribozyme by in vitro selection. RNA 1997, 3: 914-25. PMID: 9257650, PMCID: PMC1369536.Peer-Reviewed Original ResearchConceptsConsensus sequenceATP-binding RNA aptamerCatalytic fitnessHammerhead ribozymeAbsence of ATPRNA poolAllosteric ribozymesVitro SelectionRNA aptamersCatalytic functionSequence variantsAllosteric interactionsCombinatorial poolsRibozymeTranscriptionATPRNACatalytic rateSequenceHammerhead domainRibozyme constructsFitnessAllosteric delayPoolSimilar strategiesRational design of allosteric ribozymes
Tang J, Breaker R. Rational design of allosteric ribozymes. Cell Chemical Biology 1997, 4: 453-459. PMID: 9224568, DOI: 10.1016/s1074-5521(97)90197-6.Peer-Reviewed Original ResearchConceptsAllosteric regulationAllosteric ribozymesEffector moleculesProtein enzymesActive siteCatalytic ratePresence of dATPSelf-cleaving ribozymesSmall effector moleculesPresence of ATPSmall molecule receptorRational design strategyCellular processesEnzyme active siteAptamer domainAllosteric controlAllosteric enzymeCatalytic RNARNA aptamersConformational changesLigand moleculesMetabolic pathwaysCatalytic activityAllosteric hammerheadCatalytic features
1994
A DNA enzyme that cleaves RNA
Breaker R, Joyce G. A DNA enzyme that cleaves RNA. Cell Chemical Biology 1994, 1: 223-229. PMID: 9383394, DOI: 10.1016/1074-5521(94)90014-0.Peer-Reviewed Original ResearchConceptsDNA enzymeRNA enzymeDependent cleavageSimilarity of DNATypes of RNACatalytic domainDNA sequencesRandom nucleotidesRapid turnoverRNASuccessive roundsEnzymeDNACatalytic rateSelective amplificationBiological systemsTurnover rateSequenceCleavageIntermolecular contextNucleotidesPopulationTurnoverPhosphoesters