Predicted to enable ATP-dependent peptidase activity and single-stranded DNA binding activity. Predicted to be involved in chaperone-mediated protein complex assembly; mitochondrion organization; and protein quality control for misfolded or incompletely synthesized proteins. Predicted to act upstream of or within protein catabolic process and proteolysis. Predicted to be located in mitochondrion. Predicted to be active in mitochondrial matrix. Is expressed in caudal fin and midbrain hindbrain boundary. Human ortholog(s) of this gene implicated in CODAS syndrome. Orthologous to human LONP1 (lon peptidase 1, mitochondrial).