PSEN2(redirected from AD5)
Also found in: Acronyms.
PSEN2A gene on chromosome 1q31-q42 that encodes a probable catalytic subunit of the gamma-secretase complex, which catalyses the intramembrane cleavage of integral membrane proteins such as Notch receptors and APP. It may play a role in intracellular signalling and gene expression, or in linking chromatin to the nuclear membrane; it may also play a role in sorting proteins in the cytoplasm.
Defects in PSEN2 are a cause of Alzheimer disease type 4 and cardiomyopathy dilated type 1V.