2024
The West Nile virus genome harbors essential riboregulatory elements with conserved and host-specific functional roles
Huston N, Tsao L, Brackney D, Pyle A. The West Nile virus genome harbors essential riboregulatory elements with conserved and host-specific functional roles. Proceedings Of The National Academy Of Sciences Of The United States Of America 2024, 121: e2312080121. PMID: 38985757, PMCID: PMC11260092, DOI: 10.1073/pnas.2312080121.Peer-Reviewed Original ResearchConceptsWest Nile virus genomeWest Nile virusPositive-sense RNA virusesFunctional roleArthropod cell linesRiboregulatory elementsGenome foldingFlaviviral genomeRNA genomeIncreasing global threatVirus genomeGenomeRNA virusesStructural homologyHost-dependentSecondary structureLack of effective therapeuticsFunctional validationLocked nucleic acidStructural insightsRNA drugsCell linesArthropod-borneNucleic acidsAntisense locked nucleic acid
2022
The RIG-I receptor adopts two different conformations for distinguishing host from viral RNA ligands
Wang W, Pyle AM. The RIG-I receptor adopts two different conformations for distinguishing host from viral RNA ligands. Molecular Cell 2022, 82: 4131-4144.e6. PMID: 36272408, PMCID: PMC9707737, DOI: 10.1016/j.molcel.2022.09.029.Peer-Reviewed Original ResearchConceptsRNA moleculesRNA ligandsHigh-resolution cryo-EM structuresCryo-EM structureDouble-stranded RNARIG-I receptorInduction of autoimmunityViral RNA moleculesAutoinhibited conformationInnate immune receptorsHost RNARelated RNAProtein foldsMolecular basisUnique molecular featuresHigh-affinity conformationAntiviral sensingHost cellsRNA virusesRNA releaseImmune receptorsRNAViral RNAExquisite selectivityMolecular featuresThe In Vivo and In Vitro Architecture of the Hepatitis C Virus RNA Genome Uncovers Functional RNA Secondary and Tertiary Structures
Wan H, Adams RL, Lindenbach BD, Pyle AM. The In Vivo and In Vitro Architecture of the Hepatitis C Virus RNA Genome Uncovers Functional RNA Secondary and Tertiary Structures. Journal Of Virology 2022, 96: e01946-21. PMID: 35353000, PMCID: PMC9044954, DOI: 10.1128/jvi.01946-21.Peer-Reviewed Original ResearchConceptsSecondary structure mapRNA genomeRNA structureTertiary structureProtein-coding genesPositive-strand RNA virusesRegulatory RNA structuresFull-length structureHCV RNA genomeValuable model systemRNA structural motifsSecondary structural elementsEvolutionary functional analysisLife cycleVirus life cycleCellular contextCorresponding transcriptsImportant human pathogenLong RNAsGenomeSame RNAGenomic RNAComprehensive atlasFunctional analysisFunctional importance
2021
The molecular mechanism of RIG‐I activation and signaling
Thoresen D, Wang W, Galls D, Guo R, Xu L, Pyle AM. The molecular mechanism of RIG‐I activation and signaling. Immunological Reviews 2021, 304: 154-168. PMID: 34514601, PMCID: PMC9293153, DOI: 10.1111/imr.13022.Peer-Reviewed Original ResearchConceptsRIG-I activationTranscription of interferonEvolutionary implicationsAdapter proteinHost RNAPathogenic RNAsPattern recognition receptorsCell biologyInactive conformationMolecular mechanismsRNA virusesRole of RIGRNA duplexesInitial RNARNAStructural determinantsRecognition receptorsInnate immunityViral RNAInterferon expressionImportant receptorViral pathogensCellular spaceMolecular featuresReceptorsComprehensive in vivo secondary structure of the SARS-CoV-2 genome reveals novel regulatory motifs and mechanisms
Huston NC, Wan H, Strine MS, de Cesaris Araujo Tavares R, Wilen CB, Pyle AM. Comprehensive in vivo secondary structure of the SARS-CoV-2 genome reveals novel regulatory motifs and mechanisms. Molecular Cell 2021, 81: 584-598.e5. PMID: 33444546, PMCID: PMC7775661, DOI: 10.1016/j.molcel.2020.12.041.Peer-Reviewed Original ResearchConceptsRNA structureSecondary structureRNA virusesSARS-CoV-2 RNA genomeNovel regulatory motifsSingle-nucleotide resolutionDownstream functional analysisRNA drug targetsPositive-sense RNA virusesGenome architectureGenomic structureEvolutionary analysisRegulatory motifsSARS-CoV-2 genomeViral life cycleRNA genomeFunctional analysisGenomeDrug targetsPrimer designInfected cellsViral RNADepth structural analysisLife cycleΒ-coronavirus
2013
Parts, assembly and operation of the RIG-I family of motors
Rawling DC, Pyle AM. Parts, assembly and operation of the RIG-I family of motors. Current Opinion In Structural Biology 2013, 25: 25-33. PMID: 24878341, PMCID: PMC4070197, DOI: 10.1016/j.sbi.2013.11.011.Peer-Reviewed Original Research
2002
The hepatitis C viral NS3 protein is a processive DNA helicase with cofactor enhanced RNA unwinding
Pang PS, Jankowsky E, Planet PJ, Pyle AM. The hepatitis C viral NS3 protein is a processive DNA helicase with cofactor enhanced RNA unwinding. The EMBO Journal 2002, 21: 1168-1176. PMID: 11867545, PMCID: PMC125889, DOI: 10.1093/emboj/21.5.1168.Peer-Reviewed Original ResearchConceptsRNA unwindingHelicase activityDNA helicase activityCytoplasmic RNA virusesProcessive DNA helicaseImportant drug targetsReplicative DNA intermediatesNS3 helicase activityViral NS3 proteinDNA helicaseDuplex unwindingPhylogenetic analysisReplicative roleProcessive helicaseDNA intermediatesHelicaseHost DNARNA virusesRNA activityRNA replicationDrug targetsNS3 proteinUnwindingCentral roleDNA