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
Helix 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