Four peroxisomal AAA+-proteins are known: Pex1p, Pex6p, ATAD1/Msp1p and Lon.
Pex1p/Pex6p form a hexameric complex required for peroxisomal protein import.
ATAD1/Msp1p plays a role in targeting of mitochondrial tail-anchored proteins, the function in peroxisomes is unknown.
Lon is an AAA-protease required for the quality control of peroxisomal matrix proteins.