Download MendeleyX-ray structure of the metal-sensor CnrX in both the apo- and copper-bound forms.
Pompidor, G., Maillard, A.P., Girard, E., Gambarelli, S., Kahn, R., Coves, J.(2008) FEBS Lett
- PubMed: 18992246
- DOI: https://doi.org/10.1016/j.febslet.2008.10.042
- Primary Citation of Related Structures:
3EPV - PubMed Abstract:
Both the X-ray structures of the apo- and the copper-bound forms of the metal-sensor domain (residues 31-148) of CnrX from Cupriavidus metallidurans CH34 were obtained at 1.74A resolution from a selenomethionine derivative. This four-helix hooked-hairpin is the first structure of a metal-sensor in an ECF-type signaling pathway. The copper ion is bound in a type 2-like center with a 3N1O coordination in the equatorial plane and shows an unprecedented remote fifth axial ligand with Met93 contributing a weak S-Cu bond. The signal onset cannot be explained by conformational changes associated with CnrX metallation.
Organizational Affiliation:
Laboratoire des Protéines Membranaires, Institut de Biologie Structurale - Jean-Pierre Ebel, UMR 5075 CNRS-CEA-UJF, 41, rue Jules Horowitz, 38027 Grenoble Cedex, France.
