Enables oxygen-dependent protoporphyrinogen oxidase activity. Involved in heme biosynthetic process; protoporphyrinogen IX metabolic process; and response to xenobiotic stimulus. Located in mitochondrion. Is integral component of mitochondrial inner membrane. Human ortholog(s) of this gene implicated in variegate porphyria. Orthologous to human PPOX (protoporphyrinogen oxidase). [provided by Alliance of Genome Resources, Apr 2022]