Facilitates the functional incorporation of the urease nickel metallocenter. This process requires GTP hydrolysis, probably effectuated by ureG (By similarity). MPSKNGPLRVGIGGPVGSGKTALTEKLCKAMRERYSLAVVTNDIYTKEDAEALVRMQALPSERIVGVETGGCPHTAIREDASINLQAIADLNRRLPELDLVFIESGGDNLAATFSPDLADLTIYVISVCQGEEIPRKGGPGITKSDLLVINKKDLAPHVGADLEIMERDAARMRGEKPFVFSDMKRGDGVERIVDFLILHGGL ureG Urease accessory protein ureG Smed_2377 UREG_SINMW 203