2021
Enhanced specificity mutations perturb allosteric signaling in CRISPR-Cas9
Nierzwicki L, East K, Morzan U, Arantes P, Batista V, Lisi G, Palermo G. Enhanced specificity mutations perturb allosteric signaling in CRISPR-Cas9. ELife 2021, 10: e73601. PMID: 34908530, PMCID: PMC8741213, DOI: 10.7554/elife.73601.Peer-Reviewed Original ResearchConceptsHNH domainAllosteric communicationCatalytic HNH domainDNA recognition regionSpecificity-enhancing mutationsGenome editing capabilitiesAllosteric signalingAllosteric signalMutations perturbAllosteric hotspotsSpecificity enhancementCas9 endonucleaseMutational studiesDNA recognitionAllosteric connectivityAllosteric roleMolecular toolsAllosteric structureRecognition regionMolecular levelBiochemical studiesDNA cleavageSolution NMRMutationsCatalytic site
2008
Positional-scanning fluorigenic substrate libraries reveal unexpected specificity determinants of DUBs (deubiquitinating enzymes)
Drag M, Mikolajczyk J, Bekes M, Reyes-Turcu FE, Ellman JA, Wilkinson KD, Salvesen GS. Positional-scanning fluorigenic substrate libraries reveal unexpected specificity determinants of DUBs (deubiquitinating enzymes). Biochemical Journal 2008, 415: 367-375. PMID: 18601651, PMCID: PMC2766241, DOI: 10.1042/bj20080779.Peer-Reviewed Original ResearchConceptsMechanism of ubiquitinC-terminal motifUbiquitin-specific proteaseFamily of proteasesP2 positionGroup of proteasesSpecificity determinantsHuman DUBsUCH-L3DUB activityElevated salt concentrationsSubstrate specificitySubstrate librariesCellular poolPositional scanning librariesTetrapeptide substrateUbiquitinAppropriate mutationsNatural substrateDUBsRecognition regionActivation mechanismLys-ArgSubstantial toleranceSmall substrates
1990
Conserved sequences in the U2 snRNA-encoding genes of Kinetoplastida do not include the putative branchpoint recognition region
Tschudi C, Williams S, Ullu E. Conserved sequences in the U2 snRNA-encoding genes of Kinetoplastida do not include the putative branchpoint recognition region. Gene 1990, 91: 71-77. PMID: 2401409, DOI: 10.1016/0378-1119(90)90164-m.Peer-Reviewed Original ResearchConceptsU2 small nuclear RNASmall nuclear RNAU2 genesEvolutionary conservationOrder KinetoplastidaConserved sequencesNuclear RNASequence variationFlanking regionsNuclear extractsRecognition sequenceKinetoplastidaUpstream elementRecognition regionGenesRNACorresponding sequenceLeishmania mexicana amazonensisSequenceT. congolenseTrypanosoma congolenseBiosynthesisNucleotidesProteinCongolense
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