Function
Involved with IBR3 and IBR10 in the peroxisomal beta-oxidation of indole-3-butyric acid (IBA) to form indole-3-acetic acid (IAA), a biologically active auxin. May be responsible for catalyzing the dehydrogenation step in the conversion of IBA (PubMed:20562230). May be involved in the peroxisomal activation of 2,4-dichlorophenoxybutyric acid (2,4-DB), a precursor of active auxins that inhibit root growth (PubMed:19043666).