Binds to the C-terminal PTS1-type tripeptide peroxisomal targeting signal (SKL-type) and plays an essential role in peroxisomal protein import. Interacts with PEX7, PEX12, PEX13 and PEX14. Interacts (Cys-linked ubiquitinated) with ZFAND6. Interacts with VWA8 in a PEX7-dependent manner. Its distribution appears to be dynamic. It is probably a cycling receptor found mainly in the cytoplasm and as well associated to the peroxisomal membrane through a docking factor (PEX13) (By similarity). Monoubiquitination at Cys-11 is required for proper export from peroxisomes and recycling. Belongs to the peroxisomal targeting signal receptor family.