Molecular structural basis for polymorphism in Alzheimer's beta-amyloid fibrils.
Paravastu, A.K., Leapman, R.D., Yau, W.M., Tycko, R.(2008) Proc Natl Acad Sci U S A 105: 18349-18354
- PubMed: 19015532 
- DOI: 10.1073/pnas.0806270105
- Primary Citation of Related Structures:  
2LMN, 2LMO, 2LMP, 2LMQ - PubMed Abstract: 
We describe a full structural model for amyloid fibrils formed by the 40-residue beta-amyloid peptide associated with Alzheimer's disease (Abeta(1-40)), based on numerous constraints from solid state NMR and electron microscopy. This model applies specifically to fibrils with a periodically twisted morphology, with twist period equal to 120 +/- 20 nm (defined as the distance between apparent minima in fibril width in negatively stained transmission electron microscope images) ...