Predicted to enable ATP binding activity and ATP hydrolysis activity. Involved in proteolysis involved in protein catabolic process and regulation of mitochondrial gene expression. Part of mitochondrial endopeptidase Clp complex. Is expressed in adult heart; anterior midgut primordium; embryonic/larval midgut; organism; and posterior midgut primordium. Human ortholog(s) of this gene implicated in erythropoietic protoporphyria. Orthologous to human CLPX (caseinolytic mitochondrial matrix peptidase chaperone subunit X).