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J Neurosci Res. 2003 Nov 1;74(3):353-60.

Identity and function of gamma-secretase.

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Center for Neurologic Diseases, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.


gamma-Secretase catalyzes intramembrane proteolysis of various type I membrane proteins, including the amyloid-beta precursor protein and the Notch receptor. Despite its importance in the pathogenesis of Alzheimer's disease and to normal development, this protease has eluded identification until only very recently. Four membrane proteins are now known to be members of the protease complex: presenilin, nicastrin, aph-1, and pen-2. Recent findings suggest that these four proteins are sufficient to reconstitute the active gamma-secretase complex and that together they mediate the cell surface signaling of a variety of receptors via intramembrane proteolysis.

[Indexed for MEDLINE]

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