Involved in peroxisomal proliferation (PubMed:9792670). May regulate peroxisome division by recruiting the dynamin-related GTPase DNM1L to the peroxisomal membrane (PubMed:12618434). Promotes membrane protrusion and elongation on the peroxisomal surface (PubMed:20826455). Homodimer (PubMed:20826455). Heterodimer with PEX11G (PubMed:20826455). Interacts with PEX19 (PubMed:10704444). Interacts with FIS1 (PubMed:20826455). The disease is caused by variants affecting the gene represented in this entry. Belongs to the peroxin-11 family. PubMed:9792670 states that both the N- and the C-terminus are located in the cytoplasm.