Amyloid-beta protein precursor (AbetaPP) intracellular domain-associated protein-1 proteins bind to AbetaPP and modulate its processing in an isoform-specific manner

The Journal of Biological Chemistry
Enrico GhersiLuciano D'Adamio

Abstract

The amyloid-beta protein precursor (AbetaPP) is a type I transmembrane molecule that undergoes several finely regulated cleavage events. The physiopathological relevance of AbetaPP derives from the fact that its aberrant processing strongly correlates with the onset of Alzheimer's disease (AD). AD is a neurodegenerative disorder characterized by neuronal cell death, loss of synapses, and deposition of misfolded protein plaques in the brain; the main constituent of these plaques is the amyloid-beta peptide, a 40-42 amino-acid-long protein fragment derived by AbetaPP upon two sequential processing events. Mutations in the genes encoding for AbetaPP and some of the enzymes responsible for its processing are strongly associated with familial forms of early onset AD. Therefore, the elucidation of the mechanisms underlying AbetaPP metabolism appears crucial to understanding the basis for the onset of AD. Apart from Abeta, upon processing of AbetaPP other fragments are generated. The long extracellular domain is released in the extracellular space, whereas the short cytoplasmic tail, named AbetaPP intracellular domain (AID) is released intracellularly. AID appears be involved in several cellular processes, apoptosis, calcium homeostas...Continue Reading

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Citations

Mar 23, 2013·Metallomics : Integrated Biometal Science·Beom Hee LeeHan-Wook Yoo
May 3, 2005·BMC Cell Biology·Hongzhi Xu, Michael D Hebert
Mar 31, 2010·BMC Genetics·Brenda M MurdochJohn L Williams
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Aug 8, 2019·Nature Communications·Abigail U CarbonellBryen A Jordan
May 1, 2021·International Journal of Molecular Sciences·Virginie BotteroJudith A Potashkin

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