A C-terminal region of signal peptide peptidase defines a functional domain for intramembrane aspartic protease catalysis.
Narayanan S, Sato T, Wolfe MS. A C-terminal region of signal peptide peptidase defines a functional domain for intramembrane aspartic protease catalysis. J Biol Chem. 2007 Jul 13; 282(28):20172-9.