2014
C-terminal motif within Sec7 domain regulates guanine nucleotide exchange activity via tuning protein conformation
Qiu B, Zhang K, Wang S, Sun F. C-terminal motif within Sec7 domain regulates guanine nucleotide exchange activity via tuning protein conformation. Biochemical And Biophysical Research Communications 2014, 446: 380-386. PMID: 24613384, DOI: 10.1016/j.bbrc.2014.02.125.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid MotifsAmino Acid SequenceBinding SitesConserved SequenceCrystallography, X-RayGuanine Nucleotide Exchange FactorsModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedNuclear Magnetic Resonance, BiomolecularProtein ConformationProtein StabilityProtein Structure, SecondaryRecombinant ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSequence Homology, Amino AcidStatic ElectricityStructural Homology, ProteinConceptsGuanine exchange factorSec7 domainARF-GEFCatalytic domainActivity regulationGolgi network membranesNucleotide exchange activityC-terminal motifGEF catalytic activityADP-ribosylation factorCatalytic activity regulationExchange activityActivation of ARFARF-GEFsMembrane trafficExchange factorHelix JOrganelle structureMolecular detailsMutagenesis studiesProtein conformationLoop regionMotifRegulationKey role
2012
Structural Insights into the Substrate Specificity of Human Granzyme H: The Functional Roles of a Novel RKR Motif
Wang L, Zhang K, Wu L, Liu S, Zhang H, Zhou Q, Tong L, Sun F, Fan Z. Structural Insights into the Substrate Specificity of Human Granzyme H: The Functional Roles of a Novel RKR Motif. The Journal Of Immunology 2012, 188: 765-773. PMID: 22156497, DOI: 10.4049/jimmunol.1101381.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid MotifsAmino Acid SequenceAnimalsCatalytic DomainCatsCell LineCell Line, TransformedCrystallography, X-RayCytotoxicity, ImmunologicDogsGranzymesHumansHydrogen-Ion ConcentrationK562 CellsMolecular Sequence DataPan troglodytesProtein BindingSerine Proteinase InhibitorsSubstrate SpecificityConceptsRKR motifHuman granzyme HStructural insightsSubstrate recognition mechanismChymotrypsin-like serine proteaseGranzyme HSubstrate recognitionSubstrate specificitySubstrate preferenceChloromethylketone inhibitorAcidic residuesInnate immune responseAromatic residuesFunctional roleP1 positionSerine proteasesS1 pocketRecognition mechanismMotifGzmHResiduesProteolytic activityDecapeptide substrateImportant roleMutants