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APPA gene on chromosome 21q21.3 that encodes a cell surface receptor and transmembrane precursor protein which is cleaved by secretases to form various peptides.
APP mutations are implicated in autosomal dominant Alzheimer’s disease and cerebroarterial amyloidosis (cerebral amyloid angiopathy).
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A4Amyloid β peptide
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.