Download MendeleyA partially folded structure of amyloid-beta(1-40) in an aqueous environment.
Vivekanandan, S., Brender, J.R., Lee, S.Y., Ramamoorthy, A.(2011) Biochem Biophys Res Commun 411: 312-316
- PubMed: 21726530
- DOI: https://doi.org/10.1016/j.bbrc.2011.06.133
- Primary Citation of Related Structures:
2LFM - PubMed Abstract:
Aggregation of the Aβ(1-40) peptide is linked to the development of extracellular plaques characteristic of Alzheimer's disease. While previous studies commonly show the Aβ(1-40) is largely unstructured in solution, we show that Aβ(1-40) can adopt a compact, partially folded structure. In this structure (PDB ID: 2LFM), the central hydrophobic region of the peptide forms a 3(10) helix from H13 to D23 and the N- and C-termini collapse against the helix due to the clustering of hydrophobic residues. Helical intermediates have been predicted to be crucial on-pathway intermediates in amyloid fibrillogenesis, and the structure presented here presents a new target for investigation of early events in Aβ(1-40) fibrillogenesis.
Organizational Affiliation:
Department of Biophysics, University of Michigan, Ann Arbor, MI 48109-1055, USA.
