Predicted to enable metalloendopeptidase activity. Involved in protein processing. Acts upstream of or within cristae formation; mitochondrial fusion; and mitochondrial protein processing. Located in mitochondrial inner membrane. Part of m-AAA complex. Orthologous to human AFG3L1P (AFG3 like matrix AAA peptidase subunit 1, pseudogene). [provided by Alliance of Genome Resources, Apr 2022]