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. One of a cluster of genes involved in attachment of the holdfast to the cell. The holdfast is a structure that allows the bacteria to firmly adhere to surfaces. 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.