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Splice variants of the β-site APP-cleaving enzyme BACE1 in human brain and pancreas

Ehehalt, Robert, Michel, Beate, De Pietri Tonelli, Davide, Zacchetti, Daniele, Simons, Kai, Keller, Patrick·2002·Biochemical and Biophysical Research Communications
DOI 10.1016/s0006-291x(02)00169-9
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Abstract

BACE is the beta-secretase responsible for the first step in amyloidogenic processing of the amyloid precursor protein APP. We have identified two BACE isoforms, BACE1B and BACE1C, lacking 25 and 44 amino acids, respectively. Whereas the BACE1B transcript is present in human pancreas and brain, the BACE1C transcript is found in pancreas only. In transfected cells both BACE1A, which encodes the originally described full-length BACE1 protein and the close homolog BACE2 localized mainly to post-Golgi membranes. In contrast, the two shorter isoforms were found in the endoplasmic reticulum only, and they did not display beta-secretase activity. Using RNase protection we in addition show that the major pancreatic transcript is BACE1A. This suggests that the known absence of beta-secretase activity in the pancreas is not due to a missing BACE1A transcript.

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  • There are six relatively established BACE1 isoforms (A-F), in addition to reports of various less well-characterized forms including BACE1-455 and BACE1-127.

    “There are six relatively established BACE1 isoforms (A–F), in addition to reports of various less well‐characterized forms including BACE1‐455 and BACE1‐127”

    From BACE1: More than just a β‐secretase (2022) · cites this paper as [67]

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Metadata

Authors
Ehehalt, R., Michel, B., De Pietri Tonelli, D., Zacchetti, D., Simons, K., & Keller, P.
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2002-04
Volume
293
Issue
1
Pages
30-37
ISSN
0006-291X
DOI
10.1016/s0006-291x(02)00169-9
Cited by
51
References
1
Language
en
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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