Probably plays a role in ribosome assembly or function. May be involved in resolution of branched DNA intermediates that result from template switching in postreplication gaps. Binds DNA and has ATPase activity. ATP + H2O = ADP + H(+) + phosphate Associates with ribosomes. The C-terminal domain (CTD) helps bind DNA. Belongs to the ABC transporter superfamily. ABCF family. Uup subfamily.