5A1J

Periplasmic Binding Protein CeuE in complex with ferric 4-LICAM

• PDB DOI: https://doi.org/10.2210/pdb5A1J/pdb
• Entry: 5A1J supersedes: 3ZK3

• Classification: METAL BINDING PROTEIN
• Organism(s): Campylobacter jejuni
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2015-04-30 Released: 2015-05-13 
• Deposition Author(s): Raines, D.J., Moroz, O.V., Wilson, K.S., Duhme-Klair, A.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.312 
• R-Value Work: 0.264 
• R-Value Observed: 0.267 

Starting Model: experimental

Literature

Interactions of a Periplasmic Binding Protein with a Tetradentate Siderophore Mimic.

Raines, D.J., Moroz, O.V., Wilson, K.S., Duhme-Klair, A.

(2013) Angew Chem Int Ed Engl 52: 4595

• PubMed: 23512642 
• DOI: https://doi.org/10.1002/anie.201300751
• Primary Citation of Related Structures:  
  3ZKW, 5A1J


• PubMed Abstract: 
  

  Iron-bound structure: The ferric complex of a tetradentate siderophore mimic was synthesized and co-crystallized with the periplasmic binding protein CeuE of Campylobacter jejuni. In addition to electrostatic and hydrogen-bonding interactions between the binding pocket and the substrate, the structure showed direct coordination of two amino acid side chains to the Fe(III) center (orange, see figure).

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Organizational Affiliation: 

Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 32.27 kDa 
• Atom Count: 2,369 
• Modelled Residue Count: 288 
• Deposited Residue Count: 288 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENTEROCHELIN UPTAKE PERIPLASMIC BINDING PROTEIN	A	288	Campylobacter jejuni	Mutation(s): 0
UniProt
Find proteins for Q0P8Q4 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168)) Explore Q0P8Q4  Go to UniProtKB:  Q0P8Q4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LCM	C [auth A]	N,N'-butane-1,4-diylbis(2,3-dihydroxybenzamide) C18 H20 N2 O6 FBRVRHJYPWFVCL-UHFFFAOYSA-N
FE	B [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.312 
• R-Value Work: 0.264 
• R-Value Observed: 0.267 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.42	α = 90
b = 66.89	β = 90
c = 67.3	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-05-13 
Deposition Author(s): Raines, D.J., Moroz, O.V., Wilson, K.S., Duhme-Klair, A.K.
• This entry supersedes: 3ZK3

Revision History  

• Version 1.0: 2015-05-13
  Type: Initial release
  
• Version 1.1: 2024-01-10
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description