Cleavage of Alzheimer's amyloid precursor protein (APP) by secretases occurs after O-glycosylation of APP in the protein secretory pathway. Identification of intracellular compartments in which APP cleavage occurs without using toxic agents that interfere with protein metabolism.

Abstract excerpt

beta-Amyloid peptide (Abeta) is a principal component of parenchymal amyloid deposits in Alzheimer's disease. Abeta is derived from amyloid precursor protein (APP) by proteolytic cleavage. APP is subject to N- and O-glycosylation and potential tyrosine sulfation, following protein synthesis, and is then thought to be cleaved in an intracellular secretory pathway after or during these post-translational...

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