2024
The Impact of Second-Shell Nucleotides on Ligand Specificity in Cyclic Dinucleotide Riboswitches
Barth K, Hiller D, Strobel S. The Impact of Second-Shell Nucleotides on Ligand Specificity in Cyclic Dinucleotide Riboswitches. Biochemistry 2024, 63: 487-497. PMID: 38329042, PMCID: PMC11306416, DOI: 10.1021/acs.biochem.3c00586.Peer-Reviewed Original ResearchCyclic di-GMPLigand specificityHigh-throughput mutational analysisLigand contactsRegulate downstream gene expressionDownstream gene expressionDistal nucleotidesTerminal helixSequence differencesChemically similar ligandsRiboswitchNucleotideLigand-binding pocketMutation analysisVariant familiesGene expressionSmall molecule ligandsBinding sitesBinding pocketStructural motifsCrystal structureMolecule ligandsLigandSequenceMotif
2008
A relaxed active site after exon ligation by the group I intron
Lipchock SV, Strobel SA. A relaxed active site after exon ligation by the group I intron. Proceedings Of The National Academy Of Sciences Of The United States Of America 2008, 105: 5699-5704. PMID: 18408159, PMCID: PMC2311373, DOI: 10.1073/pnas.0712016105.Peer-Reviewed Original ResearchConceptsActive siteMetal ionsRelaxed active siteActive site metal ionScissile phosphateDirect metal coordinationHydrogen bonding contactsMetal coordinationBonding contactsTransition stateCrystal structureThermodynamic measurementsIonsGround stateStructureCoordinationStructural observationsTertiary interactionsIntron releaseExon ligationGroup I intronPhosphateComplexesReactionSecond step
2001
The hairpin's turn
Strobel S, Ryder S. The hairpin's turn. Nature 2001, 410: 761-762. PMID: 11298426, DOI: 10.1038/35071209.Peer-Reviewed Original ResearchBiochemical Detection of Monovalent Metal Ion Binding Sites within RNA
Basu S, Strobel S. Biochemical Detection of Monovalent Metal Ion Binding Sites within RNA. Methods 2001, 23: 264-275. PMID: 11243839, DOI: 10.1006/meth.2000.1137.Peer-Reviewed Original ResearchConceptsX-ray crystal structureMonovalent cationsMetal ion binding siteMetal ion bindingHeavy metal cationsIon binding siteMetal sitesMetal cationsSoft LewisCrystal structureIon bindingCationsChemical propertiesNucleotide analog interference mappingP4-P6 domainAzoarcus group I intronMetal potassiumSimilar binding sitesNucleic acidsBinding sitesBiochemical detectionTetrahymena group I intronLarge RNAsGroup I intronDistinct biochemical signatures