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 UreD family. Could be the product of a pseudogene. This gene encodes a non-functional protein due to an extra G nucleotide which gives rise to a truncated protein. This reverts with a frequency of 10 -4 to 10 -5 on urea containing agar. This reversion does not effect virulence in mice in any detectable fashion, suggesting urease is not important in the virulence of Y.pestis (PubMed:11119503).