| abstract |
Disclosed is a peptide that promotes Aß aggregation. An amyloid ß aggregation promotion peptide is provided that contains an amino acid sequence expressed as Xaa1-Xaa2-Xaa3-Xaa4-Xaa5 (sequence number 1) (wherein, Xaa1 is lysine or arginine, Xaa2 is leucine or isoleucine, Xaa3 is valine, isoleucine, leucine, lysine, phenylalanine, or tyrosine, Xaa4 is phenylalanine, isoleucine, leucine, lysine, or valine, and Xaa5 is phenylalanine, alanine, arginine, asparagine, cysteine, glycine, isoleucine, leucine, lysine, serine, tryptophan, tyrosine, or valine, and is not Lys-Leu-Val-Phe-Phe (sequence number 7). |