Download MendeleyCryo-EM structures of lipidic fibrils of amyloid-beta (1-40).
Frieg, B., Han, M., Giller, K., Dienemann, C., Riedel, D., Becker, S., Andreas, L.B., Griesinger, C., Schroder, G.F.(2024) Nat Commun 15: 1297-1297
- PubMed: 38351005
- DOI: https://doi.org/10.1038/s41467-023-43822-x
- Primary Citation of Related Structures:
8OVK, 8OVM, 8OWD, 8OWE, 8OWJ, 8OWK - PubMed Abstract:
Alzheimer's disease (AD) is a progressive and incurable neurodegenerative disease characterized by the extracellular deposition of amyloid plaques. Investigation into the composition of these plaques revealed a high amount of amyloid-β (Aβ) fibrils and a high concentration of lipids, suggesting that fibril-lipid interactions may also be relevant for the pathogenesis of AD. Therefore, we grew Aβ40 fibrils in the presence of lipid vesicles and determined their structure by cryo-electron microscopy (cryo-EM) to high resolution. The fold of the major polymorph is similar to the structure of brain-seeded fibrils reported previously. The majority of the lipids are bound to the fibrils, as we show by cryo-EM and NMR spectroscopy. This apparent lipid extraction from vesicles observed here in vitro provides structural insights into potentially disease-relevant fibril-lipid interactions.
Organizational Affiliation:
Institute of Biological Information Processing (IBI-7: Structural Biochemistry) and JuStruct: Jülich Center for Structural Biology, Forschungszentrum Jülich, Jülich, Germany.
