The function of PEX11A (peroxisomal biogenesis factor 11 alpha, Ensembl gene identifier ENSG00000166821) is as follows. May be involved in peroxisomal proliferation and may regulate peroxisomes division (PubMed:9792670). May mediate binding of coatomer proteins to the peroxisomal membrane (By similarity). Promotes membrane protrusion and elongation on the peroxisomal surface (PubMed:20826455). {ECO:0000250|UniProtKB:O70597, ECO:0000269|PubMed:20826455, ECO:0000269|PubMed:9792670}.