Trans-dominant negative effects of pathogenic PSEN1 mutations on γ-secretase activity and Aβ production.

Abstract excerpt

Mutations in the PSEN1 gene encoding Presenilin-1 (PS1) are the predominant cause of familial Alzheimer's disease (FAD), but the underlying mechanisms remain unresolved. To reconcile the dominant action of pathogenic PSEN1 mutations with evidence that they confer a loss of mutant protein function, we tested the hypothesis that PSEN1 mutations interfere with γ-secretase activity in a dominant-negative manner....

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