Urease accessory protein

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Function

Urease accessory protein (Ure) is a Ni-containing urea hydrolase involved in nitrogen recycling from arginine, ureide and purines. Ure proteins are involved in urease activation by the transfer of Ni into the protein[1].

  • UreD - required for nickel incorporation [2].
  • UreE - see Molecular Playground/UreE.
  • UreF - modulates the activation process of urease by eliminating the binding of Ni irons to noncarbamylated protein[3].
  • UreG - modulates the activation process of urease in plants [4].
  • UreH - forms in combination with UreF and UreG a pre-activation complex which activates urease[5].
  • UreI - probably facilitates nickel incorporation.

Structural highlights

The [6]. Water molecule is shown as red sphere.

3D structures of urease accessory protein

Urease accessory protein 3D structures

References

  1. Witte CP, Isidore E, Tiller SA, Davies HV, Taylor MA. Functional characterisation of urease accessory protein G (ureG) from potato. Plant Mol Biol. 2001 Jan;45(2):169-79. PMID:11289508
  2. Bacanamwo M, Witte CP, Lubbers MW, Polacco JC. Activation of the urease of Schizosaccharomyces pombe by the UreF accessory protein from soybean. Mol Genet Genomics. 2002 Dec;268(4):525-34. PMID:12471450 doi:10.1007/s00438-002-0769-z
  3. Moncrief MB, Hausinger RP. Purification and activation properties of UreD-UreF-urease apoprotein complexes. J Bacteriol. 1996 Sep;178(18):5417-21. PMID:8808930
  4. Myrach T, Zhu A, Witte CP. The assembly of the plant urease activation complex and the essential role of the urease accessory protein G (UreG) in delivery of nickel to urease. J Biol Chem. 2017 Sep 1;292(35):14556-14565. doi: 10.1074/jbc.M117.780403. Epub, 2017 Jul 14. PMID:28710280 doi:http://dx.doi.org/10.1074/jbc.M117.780403
  5. Fong YH, Wong HC, Chuck CP, Chen YW, Sun H, Wong KB. Assembly of Preactivation Complex for Urease Maturation in Helicobacter pylori: CRYSTAL STRUCTURE OF UreF-UreH PROTEIN COMPLEX. J Biol Chem. 2011 Dec 16;286(50):43241-9. Epub 2011 Oct 19. PMID:22013070 doi:10.1074/jbc.M111.296830
  6. Banaszak K, Martin-Diaconescu V, Bellucci M, Zambelli B, Rypniewski W, Maroney MJ, Ciurli S. Crystallographic and X-ray absorption spectroscopic characterization of Helicobacter pylori UreE bound to Ni2+ and Zn2+ reveal a role for the disordered C-terminal arm in metal trafficking. Biochem J. 2011 Oct 20. PMID:22010876 doi:10.1042/BJ20111659

Structure of UreE complex with formate and Ni+2 (PDB code 3tj8)

Drag the structure with the mouse to rotate

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Michal Harel, Alexander Berchansky