Involved in intracellular protein transport probably out of a prevacuolar endosomal compartment. May be involved in the release of components of the bilayered coat from the endosomal membrane. The association with ESCRT-III complex mediates the ATP-dependent disassembly of the ESCRT-III complex (By similarity). ATP + H2O = ADP + H(+) + phosphate The MIT domain may serve as an adapter for the ESCRT-III complex. Belongs to the AAA ATPase family.