Involved in the formation of peroxisomes, lipid bodies and protein bodies. Required for normal-shaped peroxisomes that can physically associate with the outer membrane of the chloroplast envelope. Not involved in beta-oxidation and glyoxylate cycle. Acts as an E3 ubiquitin-protein ligase. Interacts (via C-terminus) with PEX19-1. Expressed in roots, stems, leaves, flowers and siliques. Increased expression in early post-germinative growth. Up-regulated by hydrogen peroxide. Embryo lethality at the heart stage. Travels directly from the cytosol to the peroxisomes. Belongs to the pex2/pex10/pex12 family.