Involved in peroxisomal-targeting signal one (PTS1) and peroxisomal-targeting signal two (PTS2) protein import. Required for jasmonate biosynthesis. Necessary for the developmental elimination of obsolete peroxisome matix proteins. May form heteromeric AAA ATPase complexes required for the import of proteins. May be involved in PEX5 recycling. Forms a AAA ATPase complex in the cytoplasm with PEX1 (PubMed:21487094). Interacts with APME9 (PubMed:21487094). Localizes to the peroxisome when interacting with APEM9. Belongs to the AAA ATPase family.