{gamma}-Secretase Substrate Concentration Modulates the Abeta42/Abeta40 Ratio: IMPLICATIONS FOR ALZHEIMER DISEASE.

Abstract excerpt

Mutation of the amyloid precursor protein (APP), presenilin-1, or presenilin-2 results in the development of early onset autosomal dominant forms of Alzheimer disease (AD). These mutations lead to an increased Abeta42/Abeta40 ratio that correlates with the onset of disease. However, it remains unknown how these mutations affect gamma-secretase, a protease that generates the termini of Abeta40 and Abeta42. Here we...

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