Required for maturation of urease via the functional incorporation of the urease nickel metallocenter. 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 UreF family. The last gene of this probable operon, ureD, gives rise to a truncated protein. Absence of ureD prevents expression of active urease. Correction of the mutation does not effect virulence in mice in any detectable fashion, suggesting urease is not important in the virulence of Y.pestis (PubMed:11119503).