Thermodynamic and Structural Characterization of the Specific Binding of Zn(II) to Human Protein DJ-1.
Tashiro, S., Caaveiro, J.M., Wu, C.X., Hoang, Q.Q., Tsumoto, K.(2014) Biochemistry 53: 2218-2220
- PubMed: 24697266
- DOI: https://doi.org/10.1021/bi500294h
- Primary Citation of Related Structures:
4P2G, 4P34, 4P35, 4P36 - PubMed Abstract:
Mutations of DJ-1 cause familial Parkinson's disease (PD), although the role of DJ-1 in PD remains unresolved. Very recent reports have shown that DJ-1 interacts with copper ions. This evidence opens new avenues to understanding the function of DJ-1 and its role in PD. Herein, we report that Zn(II) binds to DJ-1 with great selectivity among the other metals examined: Mn(II), Fe(II), Co(II), Ni(II), and Cu(II). High-resolution X-ray crystallography (1.18 Å resolution) shows Zn(II) is coordinated to the protein by the key residues Cys106 and Glu18. These results suggest that DJ-1 may be regulated and/or stabilized by Zn(II).
Organizational Affiliation:
Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo , Kashiwa 277-8562, Japan.