Calcium-binding peroxygenase involved in the degradation of storage lipid in oil bodies. RH + ROOH = ROH + ROH. Binds 1 heme b (iron(II)-protoporphyrin IX) group. Homodimer. Expressed in megagametophytes (at protein level). Transmembrane regions are predicted by sequence analysis tools, but these regions probably constitute hydrophobic domains associated to phospholipids. The proline-knot motif may be involved in targeting to lipid bodies. Belongs to the caleosin family.