Angiotensin-converting enzyme (ACE) and the Alzheimer's disease amyloid precursor protein are two examples of membrane-bound proteins that are released in a soluble form by a post-trans-lational proteolytic cleavage event involving a secretase. Site-specific antibodies and matrix-assisted laser desorption ionization-time-of-flight (‘MALDI-TOF’) MS have been used to map the secretase cleavage site in somatic ACE to Arg-1203/Ser-1204, 24 residues proximal to the membrane-anchoring domain. Trypsin, which can solubilize ACE from the membrane, cleaves the protein at the same site. The use of structurally related hydroxamic acid-based zinc metalloproteinase inhibitors indicate that tumour necrosis factor-α convertase, a member of the ADAMs (‘a disintegrin and metalloproteinase’) family of proteins, is not involved in the proteolytic release of ACE, or in the constitutive or regulated α-secretase release of the amyloid precursor protein from a human neuronal cell line.
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Conference Article|
August 01 2000
Protein processing mechanisms: from angiotensin-converting enzyme to Alzheimer's disease
N. M. Hooper;
N. M. Hooper
1
1Proteolysis Research Group, School of Biochemistry and Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K.
1To whom correspondence should be addressed (e-mail n.m.hooper@leeds.ac.uk)
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A. J. Turner
A. J. Turner
1Proteolysis Research Group, School of Biochemistry and Molecular Biology, University of Leeds, Leeds LS2 9JT, U.K.
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Publisher: Portland Press Ltd
Received:
March 01 2000
Online ISSN: 1470-8752
Print ISSN: 0300-5127
© 2000 Biochemical Society
2000
Biochem Soc Trans (2000) 28 (4): 441–446.
Article history
Received:
March 01 2000
Citation
N. M. Hooper, A. J. Turner; Protein processing mechanisms: from angiotensin-converting enzyme to Alzheimer's disease. Biochem Soc Trans 1 August 2000; 28 (4): 441–446. doi: https://doi.org/10.1042/bst0280441
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