Cited by 402Alzheimer's disease research and treatmentsCellular transport and secretionLysosomal Storage Disorders Research

Maturation and Endosomal Targeting of β-Site Amyloid Precursor Protein-cleaving Enzyme

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Huse, Jason T., Pijak, Donald S., Leslie, George J., Lee, Virginia M.-Y., Doms, Robert W.·2000·Journal of Biological Chemistry

Abstract

The amyloidogenic Abeta peptide is liberated from the amyloid precursor protein (APP) by two proteolytic activities, beta-secretase and gamma-secretase. Recently, a type I membrane protein termed BACE (beta-site APP cleaving enzyme) with characteristics of an aspartyl protease has been identified as the beta-secretase. We undertook a series of biochemical and morphological investigations designed to characterize the basic properties of this protein. Initial studies indicated that BACE undergoes N-linked glycosylation at three of four potential sites. Metabolic pulse-chase experiments revealed that after core glycosylation, BACE is rapidly and efficiently transported to the Golgi apparatus and distal secretory pathway. BACE was also found to be quite stable, being turned over with a t(12) of approximately 16 h. Retention of BACE in the endoplasmic reticulum by introduction of a C-terminal dilysine motif prevented complex carbohydrate processing and demonstrated that propeptide cleavage occurs after exit from this organelle. BACE exhibited intramolecular disulfide bonding but did not form oligomeric structures by standard SDS-polyacrylamide gel electrophoresis analysis and sedimented as a monomer in sucrose velocity gradients. Immunofluorescence studies showed a largely vesicular staining pattern for BACE that colocalized well with endosomal, but not lysosomal, markers. Measurable levels of BACE were also detected on the plasma membrane by both immunostaining and cell surface b…

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Crossref · 10.1074/jbc.m004175200

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Authors
Huse, J. T., Pijak, D. S., Leslie, G. J., Lee, V. M.-Y., & Doms, R. W.
Affiliations
University of Pennsylvania (US)
Corresponding author
Doms, Robert W.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
2000-10
Volume
275
Issue
43
Pages
33729-33737
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2010416572
Cited by
402
References
4
Citations by year
2026: 5 · 2025: 2 · 2024: 6 · 2023: 4 · 2022: 9 · 2021: 9 · 2020: 8 · 2019: 16 · 2018: 6 · 2017: 10 · 2016: 17 · 2015: 9 · 2014: 21 · 2013: 16 · 2012: 26
FWCI
11.77
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute on Aging (P01AG011542)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Physiology › Lysosomal Storage Disorders Research
Keywords
BACE, beta-secretase, amyloid precursor protein, amyloid-beta, N-glycosylation, Golgi apparatus, secretory pathway, endosomal targeting, endosomes, protein stability, propeptide cleavage, intramolecular disulfide bond, dileucine motif, plasma membrane, protein trafficking
MeSH terms
Amino Acid Sequence, Animals, Biological Transport, Disulfides, Endocytosis, Glycosylation, Lysosomes, Molecular Sequence Data, Endopeptidases, Rabbits, Endosomes, Aspartic Acid Endopeptidases, Amino Acid Motifs, Amyloid Precursor Protein Secretases

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