2001
Allostery and protein substrate conformational change during GroEL/GroES-mediated protein folding
Saibil H, Horwich A, Fenton W. Allostery and protein substrate conformational change during GroEL/GroES-mediated protein folding. Advances In Protein Chemistry 2001, 59: 45-72. PMID: 11868280, DOI: 10.1016/s0065-3233(01)59002-6.Peer-Reviewed Original ResearchMeSH KeywordsAllosteric RegulationAmino Acid SequenceChaperonin 10Chaperonin 60Molecular Sequence DataProtein ConformationProtein FoldingConceptsProtein foldingATP-dependent protein foldingChloroplasts of eukaryotesDouble-ring complexesCo-chaperonin GroESC-terminal portionChaperonin machineProtein folding reactionChaperonin systemSubstrate polypeptidesChaperonin complexGroEL-GroESHeptameric ringsGroEL subunitStructural biologyBiophysical approachesEquatorial domainATPase mechanismConformational changesSubstrate conformational changesFolding reactionNative formGroESFoldingGroEL
1997
The crystal structure of the asymmetric GroEL–GroES–(ADP)7 chaperonin complex
Xu Z, Horwich A, Sigler P. The crystal structure of the asymmetric GroEL–GroES–(ADP)7 chaperonin complex. Nature 1997, 388: 741-750. PMID: 9285585, DOI: 10.1038/41944.Peer-Reviewed Original ResearchConceptsGroEL-GroESApical domainCis ringMulti-subunit protein assembliesCo-chaperonin GroESRings of subunitsPeptide-binding residuesChaperonin complexConsumption of ATPProtein foldingGroEL subunitProtein assembliesTrans ringAllosteric mechanismGroESEquatorial domainBloc movementDouble toroidSecond GroESEscherichia coliOutward tiltAsymmetric intermediatesCentral cavitySubunitsInward tiltDeadly Conformations—Protein Misfolding in Prion Disease
Horwich A, Weissman J. Deadly Conformations—Protein Misfolding in Prion Disease. Cell 1997, 89: 499-510. PMID: 9160742, DOI: 10.1016/s0092-8674(00)80232-9.Peer-Reviewed Original Research
1995
Unliganded GroEL at 2.8 Å: structure and functional implications
Sigler P, Horwich A. Unliganded GroEL at 2.8 Å: structure and functional implications. Philosophical Transactions Of The Royal Society B Biological Sciences 1995, 348: 113-119. PMID: 7770481, DOI: 10.1098/rstb.1995.0052.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceChaperonin 60CrystallographyEscherichia coliMolecular Sequence DataProtein BindingProtein ConformationProtein FoldingConceptsATP-binding pocketCentral channelUnfolded polypeptidesApical domainThree-dimensional structureExtensive mutagenesisMutational studiesDyad symmetryC-terminusDistinct domainsGroELATP analogBiochemical studiesStructural scaffoldFunctional implicationsHigh saltSubunitsDomainChaperoninGroESMutagenesisEntire lengthCrystal formsPolypeptideSymmetric ring
1994
Cystosolic chaperonin subunits have a conserved ATPase domain but diverged polypeptide-binding domains
Kim S, Willison K, Horwich A. Cystosolic chaperonin subunits have a conserved ATPase domain but diverged polypeptide-binding domains. Trends In Biochemical Sciences 1994, 19: 543-548. PMID: 7846767, DOI: 10.1016/0968-0004(94)90058-2.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAmino Acid SequenceBinding SitesBiological EvolutionChaperonin 60ChaperoninsConserved SequenceIntracellular Signaling Peptides and ProteinsMicrotubule-Associated ProteinsMolecular Sequence DataNuclear ProteinsPeptidesSequence AlignmentT-Complex Genome RegionUbiquitin-Protein LigasesA carboxy-terminal deletion impairs the assembly of GroEL and confers a pleiotropic phenotype in Escherichia coli K-12
Burnett B, Horwich A, Low K. A carboxy-terminal deletion impairs the assembly of GroEL and confers a pleiotropic phenotype in Escherichia coli K-12. Journal Of Bacteriology 1994, 176: 6980-6985. PMID: 7961461, PMCID: PMC197070, DOI: 10.1128/jb.176.22.6980-6985.1994.Peer-Reviewed Original ResearchThe crystal structure of the bacterial chaperonln GroEL at 2.8 Å
Braig K, Otwinowski Z, Hegde R, Boisvert D, Joachimiak A, Horwich A, Sigler P. The crystal structure of the bacterial chaperonln GroEL at 2.8 Å. Nature 1994, 371: 578-586. PMID: 7935790, DOI: 10.1038/371578a0.Peer-Reviewed Original Research
1992
Two related genes encoding extremely hydrophobic proteins suppress a lethal mutation in the yeast mitochondrial processing enhancing protein.
West A, Clark D, Martin J, Neupert W, Hartl F, Horwich A. Two related genes encoding extremely hydrophobic proteins suppress a lethal mutation in the yeast mitochondrial processing enhancing protein. Journal Of Biological Chemistry 1992, 267: 24625-24633. PMID: 1447206, DOI: 10.1016/s0021-9258(18)35810-1.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceBase SequenceChromosomes, FungalDNA, FungalGenes, FungalGenes, LethalGenes, SuppressorGenotypeMitochondriaMolecular Sequence DataMutationOpen Reading FramesPeptidesPlasmidsProtein ConformationRestriction MappingSaccharomyces cerevisiaeSequence DeletionSequence Homology, Amino AcidSuppression, GeneticTemperatureConceptsProtein importHydrophobic proteinsNH2-terminal signal peptideYeast genomic libraryNonfermentable carbon sourcesProteins of mitochondriaMitochondrial membrane proteinPrecursor proteinHigh-copy plasmidMitochondrial processingProtein translocationGenomic libraryPEP geneGrowth defectChromosomal genesMembrane proteinsMitochondrial matrixSignal peptideGenetic suppressionLethal mutationsMitochondrial membraneDouble disruptionRelated genesSequence analysisProteolytic removal
1991
A molecular chaperone from a thermophilic archaebacterium is related to the eukaryotic protein t-complex polypeptide-1
Trent J, Nimmesgern E, Wall J, Hartl F, Horwich A. A molecular chaperone from a thermophilic archaebacterium is related to the eukaryotic protein t-complex polypeptide-1. Nature 1991, 354: 490-493. PMID: 1836250, DOI: 10.1038/354490a0.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAmino Acid SequenceAnimalsArchaeal ProteinsBacterial ProteinsBase SequenceDNA-Binding ProteinsHeat-Shock ProteinsIntracellular Signaling Peptides and ProteinsMiceMicrotubule-Associated ProteinsMolecular ChaperonesMolecular Sequence DataNuclear ProteinsSaccharomyces cerevisiaeSequence Homology, Nucleic AcidSulfolobusT-Complex Genome RegionTemperatureUbiquitin-Protein LigasesConceptsComplex polypeptide 1Molecular chaperonesEukaryotic cytosolThermophilic archaebacteriumPolypeptide 1Ubiquitous eukaryotic proteinThermophilic factor 55Homo-oligomeric complexesMajor heat shock proteinsHeat shock proteinsChaperone componentsEukaryotic proteinsEssential proteinsProtein TAbundant proteinsSulfolobus shibataeComplex bindsS. shibataeChaperonesPrimary structureTF55ChaperoninProteinArchaebacteriaTCP1
1988
The processing peptidase of yeast mitochondria: the two co‐operating components MPP and PEP are structurally related.
Pollock R, Hartl F, Cheng M, Ostermann J, Horwich A, Neupert W. The processing peptidase of yeast mitochondria: the two co‐operating components MPP and PEP are structurally related. The EMBO Journal 1988, 7: 3493-3500. PMID: 3061797, PMCID: PMC454850, DOI: 10.1002/j.1460-2075.1988.tb03225.x.Peer-Reviewed Original ResearchConceptsMitochondrial processing peptidaseMitochondrial precursor proteinsProcessing peptidasePrecursor proteinMutant of SaccharomycesRemarkable sequence similarityYeast mitochondriaMPP geneSequence similarityHydrophilic proteinNovel peptidaseAmino acidsProteolytic cleavageProteinPeptidaseMutantsMitochondriaCommon originPresequenceSaccharomycesPEPGenesMutationsCleavageFunction
1987
The ornithine transcarbamylase leader peptide directs mitochondrial import through both its midportion structure and net positive charge.
Horwich A, Kalousek F, Fenton W, Furtak K, Pollock R, Rosenberg L. The ornithine transcarbamylase leader peptide directs mitochondrial import through both its midportion structure and net positive charge. Journal Of Cell Biology 1987, 105: 669-677. PMID: 3624306, PMCID: PMC2114782, DOI: 10.1083/jcb.105.2.669.Peer-Reviewed Original Research
1986
Targeting of Nuclear‐Encoded Proteins to the Mitochondrial Matrix: Implications for Human Genetic Defects
ROSENBERG L, FENTON W, HORWICH A, KALOUSEK F, KRAUS J. Targeting of Nuclear‐Encoded Proteins to the Mitochondrial Matrix: Implications for Human Genetic Defects. Annals Of The New York Academy Of Sciences 1986, 488: 99-108. PMID: 3472484, DOI: 10.1111/j.1749-6632.1986.tb54396.x.Peer-Reviewed Original Research
1985
Arginine in the leader peptide is required for both import and proteolytic cleavage of a mitochondrial precursor.
Horwich A, Kalousek F, Rosenberg L. Arginine in the leader peptide is required for both import and proteolytic cleavage of a mitochondrial precursor. Proceedings Of The National Academy Of Sciences Of The United States Of America 1985, 82: 4930-4933. PMID: 3895227, PMCID: PMC390471, DOI: 10.1073/pnas.82.15.4930.Peer-Reviewed Original ResearchConceptsLeader peptideOrnithine transcarbamoylaseImport of precursorsMost mitochondrial proteinsMitochondrial matrix fractionOverall amino acid compositionMitochondrial matrix enzymeMitochondrial precursorsMitochondrial proteinsSubunit precursorAmino acid compositionBasic arginine residuesBasic residuesMatrix enzymeGlycine residueLarger precursorArginine residuesMatrix fractionIntact mitochondriaNH2-terminalDependent proteaseProteolytic cleavageTranscarbamoylaseResiduesMitochondriaExpression of amplified DNA sequences for ornithine transcarbamylase in HeLa cells: arginine residues may be required for mitochondrial import of enzyme precursor.
Horwich A, Fenton W, Firgaira F, Fox J, Kolansky D, Mellman I, Rosenberg L. Expression of amplified DNA sequences for ornithine transcarbamylase in HeLa cells: arginine residues may be required for mitochondrial import of enzyme precursor. Journal Of Cell Biology 1985, 100: 1515-1521. PMID: 3988798, PMCID: PMC2113848, DOI: 10.1083/jcb.100.5.1515.Peer-Reviewed Original ResearchConceptsMitochondrial importOTC precursorsHeLa cellsOrnithine transcarbamylaseArginine residuesMouse dihydrofolate reductaseNH2-terminal leader sequenceRate of importArginine analog canavanineViral regulatory elementsImmunoprecipitation of extractsMitochondrial localizationCDNA sequenceRegulatory elementsLeader sequenceDNA sequencesEnzyme precursorsMitochondrial enzymesCell extractsDihydrofolate reductaseEnzymatic activityBlot analysisNormal precursorsResiduesSubunitsA cDNA clone for the precursor of rat mitochondrial ornithine transcarbamylase: comparison of rat and human leader sequences and conservation of catalytic sites
Kraus J, Hodges P, Williamson C, Horwich A, Kalousek F, Williams K, Rosenberg L. A cDNA clone for the precursor of rat mitochondrial ornithine transcarbamylase: comparison of rat and human leader sequences and conservation of catalytic sites. Nucleic Acids Research 1985, 13: 943-952. PMID: 3839075, PMCID: PMC341044, DOI: 10.1093/nar/13.3.943.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBinding SitesDNAEnzyme PrecursorsHumansMitochondria, LiverOrnithine CarbamoyltransferaseRatsRNA, MessengerConceptsAmino acid sequenceLeader sequenceAcid sequenceBasic residuesAmino-terminal leader sequenceE. coliComplete sequence homologyAmino acid residuesProtein sequence dataOrnithine transcarbamylaseCDNA clonesSequence dataDNA complementaryOrnithine transcarbamylasesSequence homologyEntire proteinHuman enzymeAcid residuesTranscarbamylasesComplementary DNAAmino acidsMessenger RNARat enzymeNucleotidesCatalytic site
1984
Structure and Expression of a Complementary DNA for the Nuclear Coded Precursor of Human Mitochondrial Ornithine Transcarbamylase
Horwich A, Fenton W, Williams K, Kalousek F, Kraus J, Doolittle R, Konigsberg W, Rosenberg L. Structure and Expression of a Complementary DNA for the Nuclear Coded Precursor of Human Mitochondrial Ornithine Transcarbamylase. Science 1984, 224: 1068-1074. PMID: 6372096, DOI: 10.1126/science.6372096.Peer-Reviewed Original ResearchConceptsComplementary DNALeader peptideOrnithine transcarbamylaseAmino-terminal leader peptideMost mitochondrial proteinsComplete primary structureHuman ornithine transcarbamylaseFree cytoplasmic ribosomesMitochondrial matrix enzymeCultured HeLa cellsMitochondrial proteinsCytoplasmic ribosomesRegulatory elementsNucleotide sequenceStable transformantsMatrix enzymeAsparagine residuesAcidic residuesLarger precursorMature formPrimary structureProtein occursHeLa cellsEscherichia coliAmino acids
1983
Molecular cloning of the cDNA coding for rat ornithine transcarbamoylase.
Horwich A, Kraus J, Williams K, Kalousek F, Konigsberg W, Rosenberg L. Molecular cloning of the cDNA coding for rat ornithine transcarbamoylase. Proceedings Of The National Academy Of Sciences Of The United States Of America 1983, 80: 4258-4262. PMID: 6576335, PMCID: PMC384016, DOI: 10.1073/pnas.80.14.4258.Peer-Reviewed Original ResearchConceptsOrnithine transcarbamoylaseSequential Edman analysesCDNA probeMitochondrial matrix enzymeInsertion of cDNAAmino acid residuesConsecutive amino acid residuesCarboxyl-terminal portionCytoplasmic polysomesMolecular cloningCDNA clonesEdman analysisDifferential colony hybridizationTranslation assaysX chromosomeCDNA codingMatrix enzymeEnzyme subunitMessenger speciesAcid residuesSequence presentPolysome immunoadsorptionIdentical subunitsColony hybridizationEscherichia coli