Hydrolyzes ATP, and can also hydrolyze GTP with lower efficiency. Has lower affinity for GTP. Monomer (By similarity). Interacts with the 26S proteasome subunit RPT6. By hydrogen peroxide and during DNA replication stress. Present with 36803 molecules/cell in log phase SD medium. Belongs to the TRAFAC class OBG-HflX-like GTPase superfamily. OBG GTPase family. YchF/OLA1 subfamily.