2001
Conversion of Phospholamban into a Soluble Pentameric Helical Bundle †
Li H, Cocco M, Steitz T, Engelman D. Conversion of Phospholamban into a Soluble Pentameric Helical Bundle †. Biochemistry 2001, 40: 6636-6645. PMID: 11380258, DOI: 10.1021/bi0026573.Peer-Reviewed Original ResearchConceptsMembrane proteinsLipid-exposed surfaceMembrane protein phospholambanLaser lightX-ray scatteringTransmembrane domainHelical bundleWild-type phospholambanOligomeric stateNative phospholambanPolar residuesSimilar foldHydrophobic residuesSoluble proteinReticulum membraneSmall-angle X-ray scatteringHelical pentamersProtein phospholambanSoluble variantProteinNatural proteinsNMR experimentsNative contactsMultiangle laser lightSarcoplasmic reticulum membranes
1999
A Method for Determining Transmembrane Helix Association and Orientation in Detergent Micelles Using Small Angle X-Ray Scattering
Bu Z, Engelman D. A Method for Determining Transmembrane Helix Association and Orientation in Detergent Micelles Using Small Angle X-Ray Scattering. Biophysical Journal 1999, 77: 1064-1073. PMID: 10423450, PMCID: PMC1300396, DOI: 10.1016/s0006-3495(99)76956-0.Peer-Reviewed Original ResearchMeSH KeywordsBiophysical PhenomenaBiophysicsButyratesDetergentsDimerizationElectrochemistryGlycophorinsHumansIn Vitro TechniquesMembrane ProteinsMicellesMolecular WeightMutationProtein ConformationProtein Structure, SecondaryQuaternary Ammonium CompoundsRecombinant Fusion ProteinsScattering, RadiationSolutionsSolventsX-RaysConceptsDetergent micellesTransmembrane domainAlpha-helical transmembrane domainsSolution small-angle X-ray scatteringTransmembrane helix associationSolution small-angle X-rayHuman erythrocyte glycophorin ASmall-angle X-ray scatteringMembrane proteinsTransmembrane proteinErythrocyte glycophorin ACarboxyl terminusHelix associationAngle X-ray scatteringGlycophorin AStaphylococcal nucleaseSmall-angle X-rayProteinModel systemMicelle contributionX-ray scatteringAngle X-rayDimerizationGyration analysisN-dodecylMultistep Denaturation of Borrelia burgdorferi OspA, a Protein Containing a Single-Layer β-Sheet †
Koide S, Bu Z, Risal D, Pham T, Nakagawa T, Tamura A, Engelman D. Multistep Denaturation of Borrelia burgdorferi OspA, a Protein Containing a Single-Layer β-Sheet †. Biochemistry 1999, 38: 4757-4767. PMID: 10200164, DOI: 10.1021/bi982443+.Peer-Reviewed Original ResearchConceptsSolution small-angle X-ray scatteringChemical shift differencesSingle-layer β-sheetSignificant kinetic barrierSmall-angle X-ray scatteringHeteronuclear NMR spectroscopyDifferential scanning calorimetryNMR spectroscopyRadius of gyrationX-ray scatteringDenaturation reactionNMR measurementsShift differencesKinetic barrierRigid moleculesScanning calorimetrySAXS measurementsΒ-sheetCooperative transitionReactionLys residuesBorrelia burgdorferi OspANative proteinBeta-sheet segmentThermal denaturation reaction
1997
Two EGF molecules contribute additively to stabilization of the EGFR dimer
Lemmon M, Bu Z, Ladbury J, Zhou M, Pinchasi D, Lax I, Engelman D, Schlessinger J. Two EGF molecules contribute additively to stabilization of the EGFR dimer. The EMBO Journal 1997, 16: 281-294. PMID: 9029149, PMCID: PMC1169635, DOI: 10.1093/emboj/16.2.281.Peer-Reviewed Original ResearchConceptsEpidermal growth factorReceptor dimerizationEGF moleculesPrecise molecular detailsHuman growth hormone receptorReceptor-receptor interactionsGrowth factorInterferon-gamma receptorEGFR dimersSignaling eventsMolecular detailsReceptor oligomerizationGrowth hormone receptorExtracellular domainEGFR familyCell surfaceMonomer bindsSubsequent associationDimerizationHormone receptorsTitration calorimetrySmall-angle X-ray scatteringBindingReceptorsMultivalent binding
1996
Surface point mutations that significantly alter the structure and stability of a protein's denatured state
Smith C, Bu Z, Engelman D, Regan L, Anderson K, Sturtevant J. Surface point mutations that significantly alter the structure and stability of a protein's denatured state. Protein Science 1996, 5: 2009-2019. PMID: 8897601, PMCID: PMC2143264, DOI: 10.1002/pro.5560051007.Peer-Reviewed Original ResearchConceptsPoint mutationsDenatured stateStopped-flow fluorescenceDenaturant concentrationSolvent-exposed sitesStreptococcal protein GMutantsG mutantTertiary structureGuHCl denaturationEquilibrium intermediatesPosition 53B1 domainProteinCircular dichroismMutationsProtein GGuanidine hydrochlorideSmall-angle X-ray scatteringStructural implicationsX-ray scatteringFluorescenceThrRadius of gyrationDenaturants
1993
Mutations can cause large changes in the conformation of a denatured protein.
Flanagan J, Kataoka M, Fujisawa T, Engelman D. Mutations can cause large changes in the conformation of a denatured protein. Biochemistry 1993, 32: 10359-70. PMID: 8399179, DOI: 10.1021/bi00090a011.Peer-Reviewed Original ResearchConceptsAmino acid substitutionsPolypeptide chainSecondary structureCoil-like polymerAcid substitutionsCircular dichroism spectroscopySmall-angle X-ray scatteringSingle amino acid substitutionCarboxyl-terminal deletionsPersistent secondary structureResidual secondary structureX-ray scatteringUseful model systemDelta polypeptideSolvent conditionsDichroism spectroscopyConformational distributionCarboxyl terminusNative nucleaseRandom polymersAmino acidsSingle substitutionPolymersStaphylococcal nucleaseGlobular proteins
1989
Melittin binding causes a large calcium-dependent conformational change in calmodulin.
Kataoka M, Head J, Seaton B, Engelman D. Melittin binding causes a large calcium-dependent conformational change in calmodulin. Proceedings Of The National Academy Of Sciences Of The United States Of America 1989, 86: 6944-6948. PMID: 2780551, PMCID: PMC297967, DOI: 10.1073/pnas.86.18.6944.Peer-Reviewed Original ResearchConceptsConformational changesCalcium-dependent conformational changeDependent conformational changesCellular functionsTarget proteinsMelittin bindsCalmodulin functionCalmodulinSolution structureCalmodulin-melittin complexSmall-angle X-ray scatteringConformation changeAbsence of calciumCompetitive inhibitorOverall structureMelittin bindingTarget peptideMelittinPresence of calciumGlobular shapeCa2PeptidesX-ray scatteringProteinBinds