IGHE has been predicted to enable antigen binding activity and immunoglobulin receptor binding activity. Predicted to be involved in several processes, including activation of immune response; defense response to other organism; and phagocytosis. IGHE has also been predicted to be located in extracellular region, a part of immunoglobulin complex, circulating, and active in external side of plasma membrane. Immunoglobulin E (IgE) are antibodies produced by the immune system. Each type of IgE has specific "radar" for each type of allergen. IgE-mediated food allergies is when the immune system reacts abnormally when exposed to one or more specific foods such as milk, egg, wheat or nuts.