2011
Insights regarding guanine nucleotide exchange from the structure of a DENN-domain protein complexed with its Rab GTPase substrate
Wu X, Bradley MJ, Cai Y, Kümmel D, De La Cruz EM, Barr FA, Reinisch KM. Insights regarding guanine nucleotide exchange from the structure of a DENN-domain protein complexed with its Rab GTPase substrate. Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 18672-18677. PMID: 22065758, PMCID: PMC3219131, DOI: 10.1073/pnas.1110415108.Peer-Reviewed Original ResearchMeSH KeywordsBinding SitesBiological TransportCrystallography, X-RayDeath Domain Receptor Signaling Adaptor ProteinsGuanineGuanine Nucleotide Exchange FactorsHumansKineticsNucleotidesProtein BindingProtein Structure, SecondaryProtein Structure, TertiaryRab GTP-Binding ProteinsRab1 GTP-Binding ProteinsConceptsGuanine nucleotide exchange factorsDENN domain proteinsMembrane traffic pathwaysNucleotide exchange factorsGDP-bound formGTP-bound formSwitch regions IHigher eukaryotesRab GTPasesGEF familyEukaryotic cellsTraffic pathwaysExchange factorSwitch INucleotide bindingKey regulatorConformational changesFirst structureNovel insightsRab35ProteinDENND1BEukaryotesRegion IGTPases
2010
A Myosin V Inhibitor Based on Privileged Chemical Scaffolds
Islam K, Chin HF, Olivares AO, Saunders LP, De La Cruz EM, Kapoor TM. A Myosin V Inhibitor Based on Privileged Chemical Scaffolds. Angewandte Chemie International Edition 2010, 49: 8484-8488. PMID: 20878825, PMCID: PMC3063097, DOI: 10.1002/anie.201004026.Peer-Reviewed Original Research
2009
Kinetic Analysis of the Guanine Nucleotide Exchange Activity of TRAPP, a Multimeric Ypt1p Exchange Factor
Chin HF, Cai Y, Menon S, Ferro-Novick S, Reinisch KM, De La Cruz EM. Kinetic Analysis of the Guanine Nucleotide Exchange Activity of TRAPP, a Multimeric Ypt1p Exchange Factor. Journal Of Molecular Biology 2009, 389: 275-288. PMID: 19361519, PMCID: PMC2770256, DOI: 10.1016/j.jmb.2009.03.068.Peer-Reviewed Original ResearchConceptsMembrane trafficExchange factorGuanine nucleotide exchange activityRab GTPase Ypt1pLarge multimeric assembliesNucleotide exchange activityThermodynamic linkage analysisWeak thermodynamic couplingTRAPP complexesStable ternary complexTRAPP subunitsGEF activityYpt1pNucleotide bindingMultimeric assembliesNucleotide exchangeNucleotide dissociationNucleotide affinityLinkage analysisIndependent pathwaysGEF systemTernary complexExchange activityTRAPPOverall net changeWatching the walk: Observing chemo‐mechanical coupling in a processive myosin motor
De La Cruz EM, Olivares AO. Watching the walk: Observing chemo‐mechanical coupling in a processive myosin motor. All Life 2009, 3: 67-70. PMID: 19794813, PMCID: PMC2707789, DOI: 10.2976/1.3095425.Peer-Reviewed Original ResearchMolecular motorsMolecular motor proteinsNucleotide bindingCell divisionCellular nanomachinesGene transcriptionGenome replicationOrganelle transportMotor proteinsSingle-molecule enzymologyActin filamentsProcessive myosin motorsProtein synthesisMyosin motorsFundamental processesProduct releaseExciting advancesRecent studiesCytoskeletonTranscriptionEnzymologyOrganismsProteinFundamental importanceChemical catalysis
2004
Equilibrium and Kinetic Analysis of Nucleotide Binding to the DEAD-Box RNA Helicase DbpA †
Talavera MA, De La Cruz EM. Equilibrium and Kinetic Analysis of Nucleotide Binding to the DEAD-Box RNA Helicase DbpA †. Biochemistry 2004, 44: 959-970. PMID: 15654752, DOI: 10.1021/bi048253i.Peer-Reviewed Original ResearchConceptsFluorescence resonance energy transferAbsence of RNARNA helicaseATP bindingNucleotide bindingConformational rearrangementsResonance energy transferConformational flexibilityDbpADependent conformationStructural rearrangementsDbpA.Protein AUnfavorable entropic contributionNucleotidesPhysiological temperatureBindingAssociation rate constantsADP