Crystal structure of NikZ from Campylobacter jejuni in complex with Ni(II) ion

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 

Starting Model: experimental
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Promiscuous nickel import in human pathogens: structure, thermodynamics, and evolution of extracytoplasmic nickel-binding proteins.

Lebrette, H.Brochier-Armanet, C.Zambelli, B.de Reuse, H.Borezee-Durant, E.Ciurli, S.Cavazza, C.

(2014) Structure 22: 1421-1432

  • DOI: https://doi.org/10.1016/j.str.2014.07.012
  • Primary Citation of Related Structures:  
    4OER, 4OES, 4OET, 4OEU, 4OEV, 4OFL, 4OFO

  • PubMed Abstract: 

    In human pathogenic bacteria, nickel is required for the activation of two enzymes, urease and [NiFe]-hydrogenase, necessary for host infection. Acquisition of Ni(II) is mediated by either permeases or ABC-importers, the latter including a subclass that involves an extracytoplasmic nickel-binding protein, Ni-BP. This study reports on the structure of three Ni-BPs from a diversity of human pathogens and on the existence of three new nickel-binding motifs. These are different from that previously described for Escherichia coli Ni-BP NikA, known to bind nickel via a nickelophore, and indicate a variegated ligand selectivity for Ni-BPs. The structures are consistent with ligand affinities measured in solution by calorimetry and challenge the hypothesis of a general requirement of nickelophores for nickel uptake by canonical ABC importers. Phylogenetic analyses showed that Ni-BPs have different evolutionary origins and emerged independently from peptide-binding proteins, possibly explaining the promiscuous behavior of this class of Ni(II) carriers.

  • Organizational Affiliation

    University Grenoble Alpes, Institut de Biologie Structurale (IBS), 38044 Grenoble, France; CNRS, IBS, 38044 Grenoble, France; CEA, IBS, 38044 Grenoble, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Putative peptide ABC-transport system periplasmic peptide-binding protein
A, B
494Campylobacter jejuni subsp. jejuni NCTC 11168 = ATCC 700819Mutation(s): 0 
Gene Names: Cj1584c
Find proteins for Q0P844 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0P844 
Go to UniProtKB:  Q0P844
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0P844
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
I [auth B]
J [auth B]
K [auth B]
E [auth A],
F [auth A],
I [auth B],
J [auth B],
K [auth B],
L [auth B]
C3 H8 O3
Query on OXL

Download Ideal Coordinates CCD File 
D [auth A],
H [auth B]
C2 O4
Query on NI

Download Ideal Coordinates CCD File 
C [auth A],
G [auth B]
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.202 
  • R-Value Observed: 0.204 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 246.12α = 90
b = 47.86β = 114.6
c = 140.46γ = 90
Software Package:
Software NamePurpose
MXdata collection
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-10-01
    Type: Initial release
  • Version 1.1: 2014-11-19
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description