. "\"A protein complex that consists of a catalytic alpha subunit (alpha-MPP) and a regulatory beta subunit (beta-MPP), and catalyzes the release of N-terminal targeting peptides from precursor proteins imported into the mitochondrion.\" [BRENDA:3.4.24.64, EC:3.4.24.64, GOC:mah]" . . "mitochondrial processing peptidase complex" . "Note that monomeric mitochondrial processing peptidases have been observed." . . .