2004
Mutation of a highly conserved isoleucine disrupts hydrophobic interactions in the αβ spectrin self-association binding site
Gallagher PG, Zhang Z, Morrow JS, Forget BG. Mutation of a highly conserved isoleucine disrupts hydrophobic interactions in the αβ spectrin self-association binding site. Laboratory Investigation 2004, 84: 229-234. PMID: 14661034, DOI: 10.1038/labinvest.3700029.Peer-Reviewed Original ResearchConceptsBinding sitesAlpha-spectrin mutationsEvolutionary conservationSpectrin functionSpectrin repeatsTriple helical modelAlpha-spectrinGenetic studiesHydrophobic isoleucineHydrophobic interactionsLow-expression alleleMolecular modelingExpression alleleSpectrinFunctional defectsTriple helixMutationsHelical modelIsoleucineErythrocyte membranesDrosophilaClinical phenotypeNeonatal hemolytic anemiaRepeatsHelix
1997
Mutation of a highly conserved residue of betaI spectrin associated with fatal and near-fatal neonatal hemolytic anemia.
Gallagher PG, Petruzzi MJ, Weed SA, Zhang Z, Marchesi SL, Mohandas N, Morrow JS, Forget BG. Mutation of a highly conserved residue of betaI spectrin associated with fatal and near-fatal neonatal hemolytic anemia. Journal Of Clinical Investigation 1997, 99: 267-277. PMID: 9005995, PMCID: PMC507794, DOI: 10.1172/jci119155.Peer-Reviewed Original ResearchMeSH KeywordsAnemia, Hemolytic, CongenitalArginineBase SequenceConserved SequenceErythrocyte MembraneFemaleHomozygoteHumansHydrops FetalisLaosLeucineMaleMembrane ProteinsModels, MolecularMuscle, SkeletalPedigreePeptide MappingPoint MutationPolymerase Chain ReactionProtein ConformationSequence Analysis, DNASpectrinConceptsImportance of leucineEvolutionary conservationSpectrin functionSpectrin repeatsBeta spectrinBetaI spectrinTriple helical modelGenetic studiesSpectrinMutationsSkeletal muscleMolecular modelingTriple helixNormal functionHelical modelLeucineErythrocyte membranesDrosophilaHydrophobic interactionsNeonatal hemolytic anemiaRepeatsHelixConservationResiduesMembrane
1992
A common type of the spectrin alpha I 46-50a-kD peptide abnormality in hereditary elliptocytosis and pyropoikilocytosis is associated with a mutation distant from the proteolytic cleavage site. Evidence for the functional importance of the triple helical model of spectrin.
Gallagher PG, Tse WT, Coetzer T, Lecomte MC, Garbarz M, Zarkowsky HS, Baruchel A, Ballas SK, Dhermy D, Palek J. A common type of the spectrin alpha I 46-50a-kD peptide abnormality in hereditary elliptocytosis and pyropoikilocytosis is associated with a mutation distant from the proteolytic cleavage site. Evidence for the functional importance of the triple helical model of spectrin. Journal Of Clinical Investigation 1992, 89: 892-898. PMID: 1541680, PMCID: PMC442935, DOI: 10.1172/jci115669.Peer-Reviewed Original ResearchConceptsProteolytic cleavage sitesAlpha-spectrin chainTriple helical modelCleavage siteHelix 2Helix-breaking proline substitutionsHereditary elliptocytosisAlpha iAlpha-spectrin geneAlpha-helical structureAmino-terminal sideHereditary pyropoikilocytosisHelical modelErythrocyte membrane proteinsLimited tryptic digestionMembrane proteinsSpectrin repeatsDNA sequencesSpectrin chainsHelix 3Position 207Leucine residuesFunctional importanceProline substitutionPoint mutations