title: Neutral endopeptidase can hydrolyze beta-amyloid(1-40) but shows no effect on beta-amyloid precursor protein metabolism.
abstract: High performance liquid chromatographic analyses of incubations of beta-amyloid(1-40) with neutral endopeptidase revealed at least nine product peaks, indicating that neutral endopeptidase can cleave beta-amyloid at multiple sites. Mass spectroscopic analysis of hydrolyzed beta-amyloid identified at least five cleavage sites, between residues Glu3-Phe4, Gly9-Trp10, Phe19-Phe20, Ala30-Ile31, and Gly33-Leu34. In contrast, amyloid precursor protein metabolism in Neuro2A cells was unaffected by the expression of recombinant neutral endopeptidase in the same cells or by the addition of a secreted form of neutral endopeptidase to spent Neuro2A cell media.
mesh_terms: D000595:Amino Acid Sequence; D016229:Amyloid beta-Peptides / Q000378:metabolism*; D016564:Amyloid beta-Protein Precursor / Q000378:metabolism*; D002478:Cells, Cultured; D006868:Hydrolysis; D008969:Molecular Sequence Data; D015260:Neprilysin / Q000494:pharmacology*; D010446:Peptide Fragments / Q000378:metabolism*
chemical_list: D016229:Amyloid beta-Peptides; D016564:Amyloid beta-Protein Precursor; D010446:Peptide Fragments; C078592:amyloid beta-protein (1-40); D015260:Neprilysin