2018
Regulation of C-C chemokine receptor 5 (CCR5) stability by Lys197 and by transmembrane protein aptamers that target it for lysosomal degradation
Petti LM, Marlatt SA, Luo Y, Scheideman EH, Shelar A, DiMaio D. Regulation of C-C chemokine receptor 5 (CCR5) stability by Lys197 and by transmembrane protein aptamers that target it for lysosomal degradation. Journal Of Biological Chemistry 2018, 293: 8787-8801. PMID: 29678881, PMCID: PMC5995508, DOI: 10.1074/jbc.ra117.001067.Peer-Reviewed Original ResearchConceptsG protein-coupled receptorsC motif chemokine receptor 5Transmembrane helicesAmino acidsProtein aptamerFifth transmembrane helixUncharged amino acidsSpecific amino acidsProtein-coupled receptorsSubstitution of LysTraptamersReceptor stabilityLysosomal degradationHomologous positionsDiverse mechanismsChemokine receptor 5Initial characterizationNew therapeutic approachesHuman T cellsStable complexesCCR5 expressionCentral roleNew insightsChemokine receptorsHelix
2016
Data on diverse roles of helix perturbations in membrane proteins
Shelar A, Bansal M. Data on diverse roles of helix perturbations in membrane proteins. Data In Brief 2016, 9: 781-802. PMID: 27844046, PMCID: PMC5099277, DOI: 10.1016/j.dib.2016.10.023.Peer-Reviewed Original ResearchInter-helical interactionsMembrane proteinsHelix perturbationTM helicesMembrane protein familyProtein familyHydrophobic residuesDiverse rolesKinked geometryΠ-helixOligomer formationBackbone torsion anglesProteinHelixStructural variationsHelical conformationDistinct typesBilayersResiduesStrong evidenceLinear αRoleHelix perturbations in membrane proteins assist in inter-helical interactions and optimal helix positioning in the bilayer
Shelar A, Bansal M. Helix perturbations in membrane proteins assist in inter-helical interactions and optimal helix positioning in the bilayer. Biochimica Et Biophysica Acta 2016, 1858: 2804-2817. PMID: 27521749, DOI: 10.1016/j.bbamem.2016.08.003.Peer-Reviewed Original ResearchConceptsInter-helical interactionsMembrane proteinsTM regionHelix perturbationTM helicesΠ-helixDistinct sequence signaturesIntegral membrane proteinsLow sequence identityHeme-copper oxidasesTransmembrane helicesProtein functionSequence signaturesSequence identityHydrophobic mismatchΑ-helixProtein chainsAmino acidsHelical fragmentsCopper oxidasesProteinHelix terminiHelixTerminusBilayers
2014
Sequence and conformational preferences at termini of α‐helices in membrane proteins: Role of the helix environment
Shelar A, Bansal M. Sequence and conformational preferences at termini of α‐helices in membrane proteins: Role of the helix environment. Proteins Structure Function And Bioinformatics 2014, 82: 3420-3436. PMID: 25257385, DOI: 10.1002/prot.24696.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid MotifsAmino Acid SequenceAnimalsComputational BiologyConserved SequenceDatabases, ProteinHumansHydrogen BondingHydrophobic and Hydrophilic InteractionsLipid BilayersMembrane ProteinsModels, BiologicalProtein ConformationProtein FoldingProtein StabilityProtein Structure, SecondarySoftware ValidationTerminology as TopicConceptsMembrane proteinsSequence preferenceΑ-helixC-terminusHelical membrane proteinsCommon secondary structural elementsHelix terminiStructural motifsSecondary structural elementsSecondary structure predictionRat neurotensin receptorTransmembrane helicesMembrane environmentHelix bundleSequencing studiesHelical positionsAmino acidsProteinStructure predictionTerminusMembrane coreGlobular proteinsMotifHelixConformational preferences