Amyloid β-Protein (10-20) is a fragment of Amyloid-β peptide, maybe used in the research of neurological disease.Amyloid β protein fragment containing the α-secretase processing site (Lys16-Leu17 bond). It also contains the HHQK domain (residues 13-16) responsible for binding to microglial cells.

Because of its similarity in structure to the neurotransmitter gamma-aminobutyric acid (GABA), it has GABAergic effects and may be useful as an anticonvulsant.

Amyloid beta-peptide(25-35) is the fragment Aβ(25-35) of the Alzheimer's amyloid β-peptide. Which has shown neurotoxic activities in cultured cells. The amino acid sequence of Aβ(25-35) peptide is NH2-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-COOH, where the first Gly represents the amino acid 25 and the last Met represents the amino acid 35 and it is also investigated in gel state for the first time.