Part of an ESX-5 / type VII specialized secretion system (T7SS), which exports several proteins. EccA5 exhibits ATPase activity and may provide energy for the export of ESX-5 substrates (By similarity). Part of the ESX-5 / type VII secretion system (T7SS), which is composed of cytosolic and membrane components (By similarity). Belongs to the CbxX/CfxQ family.