Insight into the Tumor Suppression Mechanism from the Structure of Human Polypyrimidine Splicing Factor (PSF/SFPQ) Complexed with a 30mer RNA from Murine Virus-like 30S Transcript‑1
Wang J, Sachpatzidis A, Christian TD, Lomakin IB, Garen A, Konigsberg WH. Insight into the Tumor Suppression Mechanism from the Structure of Human Polypyrimidine Splicing Factor (PSF/SFPQ) Complexed with a 30mer RNA from Murine Virus-like 30S Transcript‑1. Biochemistry 2022, 61: 1723-1734. PMID: 35998361, DOI: 10.1021/acs.biochem.2c00192.Peer-Reviewed Original ResearchConceptsRNA recognition motifSplicing factorsRNA bindingÅ resolution crystal structureTranscript 1DNA-binding domainRNA-binding pocketTumor suppression mechanismNew regulatory mechanismTumor suppressor proteinResolution crystal structureMurine virusesAcid proteinSuppressor proteinRecognition motifLung adenocarcinoma transcript 1Gene expressionRegulatory mechanismsApo structureRNA virusesHuman diseasesRNABinding pocketsHuman metastasesPositive cooperativityPhysical Association of Eukaryotic Initiation Factor 4G (eIF4G) with eIF4A Strongly Enhances Binding of eIF4G to the Internal Ribosomal Entry Site of Encephalomyocarditis Virus and Is Required for Internal Initiation of Translation
Lomakin I, Hellen C, Pestova T. Physical Association of Eukaryotic Initiation Factor 4G (eIF4G) with eIF4A Strongly Enhances Binding of eIF4G to the Internal Ribosomal Entry Site of Encephalomyocarditis Virus and Is Required for Internal Initiation of Translation. Molecular And Cellular Biology 2000, 20: 6019-6029. PMID: 10913184, PMCID: PMC86078, DOI: 10.1128/mcb.20.16.6019-6029.2000.Peer-Reviewed Original ResearchConceptsInternal ribosomal entry siteEMCV internal ribosomal entry siteEIF4GAdditional amino-terminal sequenceEukaryotic initiation factor 4GRNA recognition motifEukaryotic initiation factor 4GIInternal ribosomal entryEntry siteComplex formationBeta-globin mRNAAmino-terminal sequenceEncephalomyocarditis virus internal ribosomal entry siteRibosomal entryRecognition motifLike domainMutational analysisPhysical associationInternal initiationHigh-affinity bindingBinding fragmentSpecific interactionsRNASimilar affinitySpecific high-affinity bindingDendritic BC1 RNA: Functional Role in Regulation of Translation Initiation
Wang H, Iacoangeli A, Popp S, Muslimov IA, Imataka H, Sonenberg N, Lomakin IB, Tiedge H. Dendritic BC1 RNA: Functional Role in Regulation of Translation Initiation. Journal Of Neuroscience 2002, 22: 10232-10241. PMID: 12451124, PMCID: PMC1828542, DOI: 10.1523/jneurosci.22-23-10232.2002.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrain ChemistryCell-Free SystemCells, CulturedDendritesElectrophoretic Mobility Shift AssayEukaryotic Initiation Factor-4AEukaryotic Initiation FactorsGene Expression RegulationMacromolecular SubstancesNeuronal PlasticityNeuronsPeptide Chain Initiation, TranslationalPoly(A)-Binding ProteinsProtein BiosynthesisRatsRats, Sprague-DawleyRepressor ProteinsRibosomesRNA, MessengerRNA, Small CytoplasmicConceptsLocal protein synthesisBC1 RNATranslation initiationInternal ribosome entry mechanismCap-dependent translation initiationProtein synthesisFunctional roleMessenger RNASmall ribosomal subunitTranslational control mechanismsLevel of initiationDendritic BC1 RNAPlasticity of synapsesRepression pathwaySpecific repressorPreinitiation complexTranslational controlInitiation factorsRibosomal subunitBiochemical experimentsLocal translationInternal initiationRNAEntry mechanismDensity gradient centrifugationThe initiation of mammalian protein synthesis and mRNA scanning mechanism
Lomakin IB, Steitz TA. The initiation of mammalian protein synthesis and mRNA scanning mechanism. Nature 2013, 500: 307-311. PMID: 23873042, PMCID: PMC3748252, DOI: 10.1038/nature12355.Peer-Reviewed Original ResearchConceptsSmall ribosomal subunitTranslation initiationRibosomal subunitMammalian translation initiationProtein synthesisInitiator transfer RNAMammalian protein synthesisMultiple initiation factorsMRNA scanningTransfer RNAInitiation factorsInitiation codonConformational changesMessenger RNAFunctional implicationsEukaryotesDistinct stepsP siteSubunitsRNAFunctional stateEIF1ARibosomesEIF1Codon