pfam10251: PEN-2 (this model, PSSM-Id:402042 is obsolete and has been replaced by 463024)
Presenilin enhancer-2 subunit of gamma secretase
This entry is a short 101 peptide protein which is the smallest subunit of the gamma-secretase aspartyl protease complex that catalyzes the intramembrane cleavage of a subset of type I transmembrane proteins. The other active constituents of the complex are presenilin (PS) nicastrin and anterior pharynx defective-1 (APH-1) protein. PEN-2 adopts a hairpin orientation in the membrane with its N- and C-terminal domains facing the luminal/extracellular space, and the C-terminal domain maintains PS stability within the complex.