Enzymatic Screening of β-Amyloid Precursor Protein-Based Substrates

We performed an enzymatic screening of synthetic peptides based on β-amyloid precursor protein substrates. The template peptide sequence was a decapeptide derived from our previous study, which determined several effective unnatural amino acids. In this new libraries containing some acid compounds were prepared in the solid phase and digested with β-site amyloid protein-cleaving enzyme. reaction mixture analyzed using high-performance liquid chromatography combined mass spectrometry. that showed higher cleavage than reported.