Processing of beta-amyloid precursor-like protein-1 and -2 by gamma-secretase regulates transcription

The familial Alzheimer's disease gene product beta-amyloid (Abeta) precursor protein (APP) is processed by the beta- and gamma-secretases to produce Abeta as well as AID (APP Intracellular Domain) which is derived from the extreme carboxyl terminus of APP. AID was originally shown to lower the...

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Veröffentlicht in:The Journal of biological chemistry 2002-11, Vol.277 (46), p.44195-44201
Hauptverfasser: Scheinfeld, Meir H, Ghersi, Enrico, Laky, Karen, Fowlkes, B J, D'Adamio, Luciano
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container_end_page 44201
container_issue 46
container_start_page 44195
container_title The Journal of biological chemistry
container_volume 277
creator Scheinfeld, Meir H
Ghersi, Enrico
Laky, Karen
Fowlkes, B J
D'Adamio, Luciano
description The familial Alzheimer's disease gene product beta-amyloid (Abeta) precursor protein (APP) is processed by the beta- and gamma-secretases to produce Abeta as well as AID (APP Intracellular Domain) which is derived from the extreme carboxyl terminus of APP. AID was originally shown to lower the cellular threshold to apoptosis and more recently has been shown to modulate gene expression such that it represses Notch-dependent gene expression while in combination with Fe65 it enhances gene activation. Here we report that the two other members of the APP family, beta-amyloid precursor-like protein-1 and -2 (APLP1 and APLP2), are also processed by the gamma-secretase in a Presenilin 1-dependent manner. Furthermore, the extreme carboxyl-terminal fragments produced by this processing (here termed APP-like Intracellular Domain or ALID1 and ALID2) are able to enhance Fe65-dependent gene activation, similar to what has been reported for AID. Considering that only APP and not the APLPs have been linked to familial Alzheimer's disease (AD), this data should help in understanding the physiologic roles of the APP family members and in differentiating these functions from the pathologic role of APP in Alzheimer's disease.
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subjects Alzheimer Disease - metabolism
Amino Acid Motifs
Amyloid beta-Protein Precursor - analogs & derivatives
Amyloid beta-Protein Precursor - chemistry
Amyloid beta-Protein Precursor - metabolism
Amyloid Precursor Protein Secretases
Animals
Aspartic Acid Endopeptidases
Blotting, Western
Brain - metabolism
Cell Differentiation
Cell Line
Cell Nucleus - metabolism
Cells, Cultured
Cytoplasm - metabolism
Endopeptidases - metabolism
Glutathione Transferase - metabolism
Humans
Immunohistochemistry
Luciferases - metabolism
Membrane Proteins - metabolism
Mice
Mice, Knockout
Microscopy, Fluorescence
Nerve Tissue Proteins - metabolism
Point Mutation
Precipitin Tests
Protein Binding
Protein Structure, Tertiary
Receptors, Notch
Transcription, Genetic
Transcriptional Activation
Tyrosine - metabolism
title Processing of beta-amyloid precursor-like protein-1 and -2 by gamma-secretase regulates transcription
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