2013
Membrane Permeation Induced by Aggregates of Human Islet Amyloid Polypeptides
Poojari C, Xiao D, Batista V, Strodel B. Membrane Permeation Induced by Aggregates of Human Islet Amyloid Polypeptides. Biophysical Journal 2013, 105: 2323-2332. PMID: 24268144, PMCID: PMC3838749, DOI: 10.1016/j.bpj.2013.09.045.Peer-Reviewed Original ResearchConceptsChiral sum frequency generation (SFG) spectroscopySum frequency generation spectroscopyMembrane/water interfaceFrequency generation spectroscopyΒ-sheet secondary structureChannel-forming proteinMolecular dynamics simulationsSimulated SFG spectraAmphiphilic propertiesHuman islet amyloidGeneration spectroscopySFG spectraWater interfaceΒ-sandwichHuman islet amyloid polypeptideIslet β-cellsAmyloid polypeptideWater permeationDynamics simulationsHIAPP aggregatesSecondary structureMembrane permeationIslet amyloid polypeptideΒ-cellsFibrillar structuresChiral Sum Frequency Generation for In Situ Probing Proton Exchange in Antiparallel β‑Sheets at Interfaces
Fu L, Xiao D, Wang Z, Batista VS, Yan EC. Chiral Sum Frequency Generation for In Situ Probing Proton Exchange in Antiparallel β‑Sheets at Interfaces. Journal Of The American Chemical Society 2013, 135: 3592-3598. PMID: 23394622, PMCID: PMC9208335, DOI: 10.1021/ja3119527.Peer-Reviewed Original ResearchConceptsD exchangeChiral sum frequency generation (SFG) spectroscopySum frequency generation spectroscopyHydrogen/deuterium exchangeSurface-selective methodFrequency generation spectroscopyVibrational modesAir/water interfaceAb initio simulationsWater OD stretch bandsH bondsPeptide backboneGeneration spectroscopyN stretchBulk solutionProton exchangeD stretchWater interfaceAntiparallel β-sheetDeuterium exchangeStretch bandFourier transformMass spectroscopyInitio simulations
2011
Amphiphilic Adsorption of Human Islet Amyloid Polypeptide Aggregates to Lipid/Aqueous Interfaces
Xiao D, Fu L, Liu J, Batista V, Yan E. Amphiphilic Adsorption of Human Islet Amyloid Polypeptide Aggregates to Lipid/Aqueous Interfaces. Journal Of Molecular Biology 2011, 421: 537-547. PMID: 22210153, PMCID: PMC3350761, DOI: 10.1016/j.jmb.2011.12.035.Peer-Reviewed Original ResearchConceptsLipid/aqueous interfaceAqueous interfaceΒ-sheet aggregatesAb initio quantum chemistry calculationsChiral sum frequency generation (SFG) spectroscopySum frequency generation spectroscopyQuantum chemistry calculationsFrequency generation spectroscopyHuman islet amyloid polypeptideHuman islet amyloid polypeptide aggregatesChemistry calculationsAmphiphilic propertiesGeneration spectroscopyΒ-sheetPolypeptide aggregatesIslet amyloid polypeptideΒ-strandsAggregatesAmyloid polypeptideAdsorbAdsorptionSpectroscopyAmyloid proteinInterfacePotential disruptive effects