May have a structural role to stabilize the lipid body during desiccation of the seed by preventing coalescence of the oil. Probably interacts with both lipid and phospholipid moieties of lipid bodies. May also provide recognition signals for specific lipase anchorage in lipolysis during seedling growth. Surface of oil bodies. Oleosins exist at a monolayer lipid/water interface. Expressed in seeds (at protein level). Expressed during seed maturation. Expressed in maturing seeds about 1 and half weeks after flowering. Expression continues steadily thereafter until it decreases in the seed-drying stage, reaching undetectable levels in mature seeds. The proline-knot motif may be involved in the targeting to oil bodies. Causes an allergic reaction in human. Binds to IgE in all of the 32 patients tested allergic to sesame seeds. Belongs to the oleosin family.