This synthetic peptide consists of amino acids 1 to 20 of beta amyloid protein.

Amyloid β-peptide fragment; minimum section required to bind to brain proteins. Binds with high affinity to α7-nicotinic ACh receptors, and impairs memory retention following central administration in mice in vivo.

β-Amyloid (31-35) is the shortest sequence of native Amyloid-β peptide that retains neurotoxic activity. This synthetic peptide consists of amino acids 31 to 35 of beta amyloid protein.