Lipid-binding oleosin involved in tapetum development, especially for the physiology of tapetosomes (By similarity). Also implicated in the formation of pollen coat (By similarity). Surface of oil bodies. Oleosins exist at a monolayer lipid/water interface. Inflorescence-specific expression, especially in buds and flowers florets (PubMed:8220457, PubMed:11929861, PubMed:14739246). Present in pollen (at protein level) (PubMed:11431566). In flowers, present in the tapetum. Belongs to the oleosin family.