6533b858fe1ef96bd12b5b36
RESEARCH PRODUCT
Calcium-dependent conformational changes of membrane-bound Ebola fusion peptide drive vesicle fusion
Tatiana SuárezFélix M. GoñiIsmael MingarroEnrique Pérez-payáArturo MugaMaría J. GómaraJosé L. Nievasubject
Vesicle fusionEbola glycoproteinSpectrophotometry InfraredProtein ConformationvirusesBiophysicsPeptideBiologymedicine.disease_causePhosphatidylinositolsBiochemistryMembrane FusionProtein Structure Secondarychemistry.chemical_compoundProtein structureFusion peptideMembranes (Biologia)Structural BiologyGeneticsmedicinePhosphatidylinositolMolecular Biologychemistry.chemical_classificationEbola virusVesicleCircular DichroismLipid bilayer fusionViral fusionWaterMembranes ArtificialCell BiologyEbolavirusLipidsTransmembrane proteinPeptide FragmentsBiochemistrychemistryLiposomesBiophysicsCalciumPèptidsPeptide–lipid interactionViral Fusion Proteinsdescription
AbstractThe fusogenic subdomain of the Ebola virus envelope glycoprotein is an internal sequence located ca. 20 residues downstream the N-terminus of the glycoprotein transmembrane subunit. Partitioning of the Ebola fusion peptide into membranes containing phosphatidylinositol in the absence of Ca2+ stabilizes an α-helical conformation, and gives rise to vesicle efflux but not vesicle fusion. In the presence of millimolar Ca2+ the membrane-bound peptide adopts an extended β-structure, and induces inter-vesicle mixing of lipids. The peptide conformational polymorphism may be related to the flexibility of the virus–cell intermembrane fusogenic complex.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2003-01-01 |