8BAX

X-ray structure of the CeuE Homologue from Geobacillus stearothermophilus - azotochelin complex.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Thermostable homologues of the periplasmic siderophore-binding protein CeuE from Geobacillus stearothermophilus and Parageobacillus thermoglucosidasius.

Blagova, E.V.Miller, A.H.Bennett, M.Booth, R.L.Dodson, E.J.Duhme-Klair, A.K.Wilson, K.S.

(2023) Acta Crystallogr D Struct Biol 79: 694-705

  • DOI: https://doi.org/10.1107/S2059798323004473
  • Primary Citation of Related Structures:  
    8B7X, 8BAW, 8BAX, 8BF6, 8BJ9, 8BNW

  • PubMed Abstract: 

    Siderophore-binding proteins from two thermophilic bacteria, Geobacillus stearothermophilus and Parageobacillus thermoglucosidasius, were identified from a search of sequence databases, cloned and overexpressed. They are homologues of the well characterized protein CjCeuE from Campylobacter jejuni. The iron-binding histidine and tyrosine residues are conserved in both thermophiles. Crystal structures were determined of the apo proteins and of their complexes with iron(III)-azotochelin and its analogue iron(III)-5-LICAM. The thermostability of both homologues was shown to be about 20°C higher than that of CjCeuE. Similarly, the tolerance of the homologues to the organic solvent dimethylformamide (DMF) was enhanced, as reflected by the respective binding constants for these ligands measured in aqueous buffer at pH 7.5 in the absence and presence of 10% and 20% DMF. Consequently, these thermophilic homologues offer advantages in the development of artificial metalloenzymes using the CeuE family.


  • Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, University of York, Heslington, York YO10 5DD, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Siderophore ABC transporter substrate-binding protein300Geobacillus stearothermophilusMutation(s): 0 
Gene Names: EPB69_07310
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.38 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.158α = 90
b = 66.652β = 90
c = 117.055γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
REFMACrefinement
DIALSdata reduction
Aimlessdata scaling
MOLREPphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
UK Research and Innovation (UKRI)United KingdomEP/T007338/1

Revision History  (Full details and data files)

  • Version 1.0: 2023-07-12
    Type: Initial release
  • Version 1.1: 2023-07-19
    Changes: Database references
  • Version 1.2: 2023-08-09
    Changes: Data collection, Database references
  • Version 1.3: 2024-02-07
    Changes: Data collection, Refinement description