This amino acids 11 to 22 fragment of b-amyloid is capable of forming well-organized amyloid fibrils in vitro, similar to the pathogenic ones found in amyloidosis. Analysis of the structural properties of one monomer of b-amyloid (11-22) as well as of the aggregation mechanisms for four chains of b-amyloid (11-22) showed that the system assembles rapidly into a random globular state that evolves into three- and four-stranded antiparallel beta-sheets. The aggregation process is considerably accelerated by the presence of preformed dimers.
Boucher, G. et al. Proteins 65, 877 (2006); Tjernberg, L. et al. J. Biol. Chem. 274, 12619 (1999).
Sequence (One-Letter Code)
Sequence (Three-Letter Code)
H - Glu - Val - His - His - Gln - Lys - Leu - Val - Phe - Phe - Ala - Glu - Asp - Val - Gly - OH