Part of the ESX-5 specialized secretion system, which is responsible for the secretion of EsxN and a number of PE_PGRS and PPE proteins. Part of the ESX-5 / type VII secretion system (T7SS), which is composed of cytosolic and membrane components. The ESX-5 membrane complex is composed of EccB5, EccC5, EccD5 and EccE5. Belongs to the EccE family.