2024
Mutation-induced shift of the photosystem II active site reveals insight into conserved water channels
Flesher D, Liu J, Wang J, Gisriel C, Yang K, Batista V, Debus R, Brudvig G. Mutation-induced shift of the photosystem II active site reveals insight into conserved water channels. Journal Of Biological Chemistry 2024, 300: 107475. PMID: 38879008, PMCID: PMC11294709, DOI: 10.1016/j.jbc.2024.107475.Peer-Reviewed Original ResearchOxygen-evolving complexPhotosystem II active sitePhotosystem IIJahn-Teller distortionPhotosystem II complexD1-Asp170Jahn-TellerResolution cryo-EM structureMutation-induced structural changesCryo-EM structureMagnetic propertiesD1 subunitActive siteOxygenic photosynthesisMutagenesis studiesLight-driven water oxidationSpectroscopic propertiesStructural basisSpectroscopic dataAmino acidsWater oxidation mechanismPhotosystemMutationsMutation-induced shiftWater oxidation
2005
Role of the GYVG Pore Motif of HslU ATPase in Protein Unfolding and Translocation for Degradation by HslV Peptidase*
Park E, Rho YM, Koh OJ, Ahn SW, Seong IS, Song JJ, Bang O, Seol JH, Wang J, Eom SH, Chung CH. Role of the GYVG Pore Motif of HslU ATPase in Protein Unfolding and Translocation for Degradation by HslV Peptidase*. Journal Of Biological Chemistry 2005, 280: 22892-22898. PMID: 15849200, DOI: 10.1074/jbc.m500035200.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateAmino Acid MotifsAmino Acid SequenceCaseinsChromatographyCross-Linking ReagentsDose-Response Relationship, DrugElectrophoresis, Polyacrylamide GelEndopeptidase ClpEscherichia coliEscherichia coli ProteinsGlycineHydrolysisModels, BiologicalModels, MolecularMolecular Sequence DataMutagenesisMutagenesis, Site-DirectedMutationPeptidesProtein BindingProtein DenaturationProtein FoldingProtein TransportSequence Homology, Amino AcidTemperatureConceptsHslU ATPasePore motifHslVU complexHslV peptidaseCentral poreATP-dependent proteaseProtein unfoldingProteolytic active sitesHslU hexamerProteolytic chamberHslV dodecamerUnfolded proteinsHslV.HslUGly residueTranslocation processAmino acidsDegradation of caseinMotifProteinATP cleavageSame structural featuresATPase activityTranslocationATPaseA specific subdomain in φ29 DNA polymerase confers both processivity and strand-displacement capacity
Rodríguez I, Lázaro JM, Blanco L, Kamtekar S, Berman AJ, Wang J, Steitz TA, Salas M, de Vega M. A specific subdomain in φ29 DNA polymerase confers both processivity and strand-displacement capacity. Proceedings Of The National Academy Of Sciences Of The United States Of America 2005, 102: 6407-6412. PMID: 15845765, PMCID: PMC1088371, DOI: 10.1073/pnas.0500597102.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceBacteriophage T4DNADNA PrimersDNA ReplicationDNA-Directed DNA PolymeraseElectrophoretic Mobility Shift AssayExodeoxyribonucleasesModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein ConformationProtein Structure, TertiarySequence AlignmentTemplates, GeneticConceptsDNA polymerasePhi29 DNA polymeraseProtein-primed DNA polymerasesStrand-displacement capacityMutant DNA polymerasesΦ29 DNA polymeraseRecent crystallographic studiesDNA binding capacityAsp-398Deletion mutantsStructural insightsSpecific insertionProcessivityPolymeraseStrand displacementFunctional roleAmino acidsPalm subdomainSpecific subdomainsBiochemical analysisDNA synthesisCritical roleRegion 2Crystallographic studiesIntrinsic capacity
2003
The structural basis of cysteine aminoacylation of tRNAPro by prolyl-tRNA synthetases
Kamtekar S, Kennedy WD, Wang J, Stathopoulos C, Söll D, Steitz TA. The structural basis of cysteine aminoacylation of tRNAPro by prolyl-tRNA synthetases. Proceedings Of The National Academy Of Sciences Of The United States Of America 2003, 100: 1673-1678. PMID: 12578991, PMCID: PMC149891, DOI: 10.1073/pnas.0437911100.Peer-Reviewed Original ResearchConceptsLigand-free conformationCognate amino acidAmino acidsRecent biochemical experimentsProlyl-tRNA synthetasesCysteinyl-tRNA synthetaseProlyl-tRNA synthetaseActive site pocketMethanocaldococcus jannaschiiMethanopyrus kandleriMethanothermobacter thermautotrophicusCognate tRNAEssential enzymeApo formStructural basisBiochemical experimentsAminoacyl-adenylate analoguesHomology modelingConformational changesProtein synthesisTRNAProRSAdenylate complexNanomolar affinitySynthetase
2002
Crystal Structure of d-Hydantoinase from Bacillus stearothermophilus: Insight into the Stereochemistry of Enantioselectivity † , ‡
Cheon YH, Kim HS, Han KH, Abendroth J, Niefind K, Schomburg D, Wang J, Kim Y. Crystal Structure of d-Hydantoinase from Bacillus stearothermophilus: Insight into the Stereochemistry of Enantioselectivity † , ‡. Biochemistry 2002, 41: 9410-9417. PMID: 12135362, DOI: 10.1021/bi0201567.Peer-Reviewed Original ResearchConceptsD-hydantoinaseExocyclic substituentsTIM-barrel foldStriking structural similarityApo crystal structureSubstrate recognitionBarrel foldCatalytic chemistryStructural comparisonSide-chain precursorBacillus stearothermophilusCrystal structureAmino acidsStructural similarityDihydroorotaseHydantoinsStereochemistrySubstituentsEnantioselectivityEnzymeStereospecific hydrolysisHydrolysisStructureChemistryHydantoinaseThe C-terminal Tails of HslU ATPase Act as a Molecular Switch for Activation of HslV Peptidase*
Seong IS, Kang MS, Choi MK, Lee JW, Koh OJ, Wang J, Eom SH, Chung CH. The C-terminal Tails of HslU ATPase Act as a Molecular Switch for Activation of HslV Peptidase*. Journal Of Biological Chemistry 2002, 277: 25976-25982. PMID: 12011053, DOI: 10.1074/jbc.m202793200.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAmino Acid SequenceAmino Acid SubstitutionATP-Dependent ProteasesBinding SitesElectrophoresis, Polyacrylamide GelEndopeptidasesEnzyme ActivationHeat-Shock ProteinsModels, MolecularMolecular Sequence DataMutagenesis, Site-DirectedProtein ConformationSerine EndopeptidasesStructure-Activity RelationshipConceptsC-terminal tailHslV peptidaseHslVU complexC-terminusHexameric ringMolecular switchATP-dependent proteaseC-terminal 10 residuesAmino acidsProteolytic active sitesDodecamer consistingHslU hexamerHslU ATPaseTail peptideAxial poreATPase actsPolypeptide substratesSubstrate entryS proteasomeHslUCentral poreTerminusHslVPeptidaseCritical role