作者: Irina Perdivara , Robert Petrovich , Bernadette Allinquant , Leesa J. Deterding , Kenneth B. Tomer
DOI: 10.1021/PR800758G
关键词:
摘要: Accumulation and deposition of β-amyloid peptide, a major constituent in neuritic plaques are hallmarks Alzheimer’s disease (AD) AD-related neurodegenerative diseases. β-Amyloid (Aβ) is derived from the proteolytic cleavage amyloid precursor protein (APP), transmembrane present three isoforms brain comprising 695, 751 770 amino acids, respectively. Among other post-translational modifications, APP modified during maturation by N- O-glycosylation, which thought to be responsible for its expression secretion. Unlike N-glycosylation, no sites O-glycosylation have previously been reported. We report here identification specific secreted APP695 (sAPP695) produced CHO cells, using combination high-performance liquid chromatography electrospray−tandem mass spectrometry. With use electron transfer dissociation collision induced (ETD CID), we identified type, composition an...