5I0V

IRON AND COPPER-BOUND P19 FROM CAMPYLOBACTER JEJUNI UNDER OXIDIZING CONDITIONS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 

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This is version 1.1 of the entry. See complete history


Literature

A copper site is required for iron transport by the periplasmic proteins P19 and FetP.

Chan, A.C.K.Lin, H.Koch, D.Grass, G.Nies, D.H.Murphy, M.E.P.

(2020) Metallomics 12: 1530-1541

  • DOI: 10.1039/d0mt00130a
  • Primary Citation of Related Structures:  
    5I0W, 5I0V, 5I0Y, 5I0X, 6WEE, 6WED, 6WEF

  • PubMed Abstract: 
  • Campylobacter jejuni is a leading cause of food-borne gastrointestinal disease in humans and uropathogenic Escherichia coli is a leading cause of urinary tract infections. Both human pathogens harbour a homologous iron uptake system (termed cjFetM-P19 in C ...

    Campylobacter jejuni is a leading cause of food-borne gastrointestinal disease in humans and uropathogenic Escherichia coli is a leading cause of urinary tract infections. Both human pathogens harbour a homologous iron uptake system (termed cjFetM-P19 in C. jejuni and ecFetM-FetP in E. coli). Although these systems are important for growth under iron limitation, the mechanisms by which these systems function during iron transport remain undefined. The copper ions bound to P19 and FetP, the homologous periplasmic proteins, are coordinated in an uncommon penta-dentate manner involving a Met-Glu-His3 motif and exhibit positional plasticity. Here we demonstrate the function of the Met and Glu residues in modulating copper binding and controlling copper positioning through site-directed variants, binding assays, and crystal structures. Growth of C. jejuni strains with these p19 variants is impaired under iron limited conditions as compared to the wild-type strain. Additionally, an acidic residue-rich secondary site is required for binding iron and function in vivo. Finally, western blot analyses demonstrate direct and specific interactions between periplasmic P19 and FetP with the large periplasmic domain of their respective inner membrane transporters cjFetM and ecFetM.


    Organizational Affiliation

    Department of Microbiology and Immunology, Life Sciences Institute, University of British Columbia, Canada. michael.murphy@ubc.ca.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein P19A, B159Campylobacter jejuni subsp. jejuni 81-176Mutation(s): 0 
Gene Names: CJJ81176_1650
UniProt
Find proteins for A0A0H3PA01 (Campylobacter jejuni subsp. jejuni serotype O:23/36 (strain 81-176))
Explore A0A0H3PA01 
Go to UniProtKB:  A0A0H3PA01
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.22α = 90
b = 73.72β = 90
c = 74.85γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
REFMACphasing
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2021-02-10
    Changes: Database references, Derived calculations