2013
The common hereditary elliptocytosis-associated α-spectrin L260P mutation perturbs erythrocyte membranes by stabilizing spectrin in the closed dimer conformation
Harper SL, Sriswasdi S, Tang HY, Gaetani M, Gallagher PG, Speicher DW. The common hereditary elliptocytosis-associated α-spectrin L260P mutation perturbs erythrocyte membranes by stabilizing spectrin in the closed dimer conformation. Blood 2013, 122: 3045-3053. PMID: 23974198, PMCID: PMC3811177, DOI: 10.1182/blood-2013-02-487702.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceBinding SitesCross-Linking ReagentsElliptocytosis, HereditaryErythrocyte MembraneHumansModels, MolecularMolecular Sequence DataMutationProtein BindingProtein MultimerizationProtein StabilityProtein Structure, SecondaryProtein Structure, TertiaryRecombinant ProteinsSpectrinConceptsHereditary elliptocytosisMembrane destabilizationLarge conformational rearrangementsGel filtration analysisMembrane proteinsTetramer assemblyHereditary pyropoikilocytosisBiophysical analysisCommon hereditary elliptocytosisConformational rearrangementsDimer conformationHelical contentTetramerization siteFiltration analysisSpectrin tetramersNovel mechanismUnknown mechanismMutationsBinding assaysSpectrinChemical crosslinkingErythrocyte shapeTetramerErythrocyte membranesMembrane
2010
A Fused α-β “Mini-spectrin” Mimics the Intact Erythrocyte Spectrin Head-to-head Tetramer*
Harper SL, Li D, Maksimova Y, Gallagher PG, Speicher DW. A Fused α-β “Mini-spectrin” Mimics the Intact Erythrocyte Spectrin Head-to-head Tetramer*. Journal Of Biological Chemistry 2010, 285: 11003-11012. PMID: 20139081, PMCID: PMC2856305, DOI: 10.1074/jbc.m109.083048.Peer-Reviewed Original ResearchConceptsN-terminal regionFull-length dimerC-terminal regionRed cell membrane integrityGel filtration analysisLateral associationCell membrane integrityOligomeric stateFusion proteinAlpha-spectrinTetramer formationBeta subunitC-terminalN-terminalConformational statesFunctional studiesFiltration analysisMembrane integritySpectrin heterodimersTerminal peptidesDimer interactionsDistinct groupsSpectrinSpectrin dimersProtein