Required for maturation of urease via the functional incorporation of the urease nickel metallocenter. Disrupting the ure2 operon has no effect on urease activity, or pathogen survival in BALB/c mice when inoculated by gavage, but confers slightly enhanced resistance to low pH killing in vitro. UreD, UreF and UreG form a complex that acts as a GTP-hydrolysis-dependent molecular chaperone, activating the urease apoprotein by helping to assemble the nickel containing metallocenter of UreC. The UreE protein probably delivers the nickel. Belongs to the UreD family.