Predicted to enable TBP-class protein binding activity and proteasome-activating activity. Involved in negative regulation of neuron death. Part of proteasome regulatory particle. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; hemolymphoid system gland; and liver and biliary system. Orthologous to human PSMC1 (proteasome 26S subunit, ATPase 1). [provided by Alliance of Genome Resources, Apr 2022]