4FZO

Crystal Structure of the apo-form uranyl binding protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A protein engineered to bind uranyl selectively and with femtomolar affinity.

Zhou, L.Bosscher, M.Zhang, C.Ozcubukcu, S.Zhang, L.Zhang, W.Li, C.J.Liu, J.Jensen, M.P.Lai, L.He, C.

(2014) Nat Chem 6: 236-241

  • DOI: https://doi.org/10.1038/nchem.1856
  • Primary Citation of Related Structures:  
    4FZO, 4FZP

  • PubMed Abstract: 

    Uranyl (UO2(2+)), the predominant aerobic form of uranium, is present in the ocean at a concentration of ~3.2 parts per 10(9) (13.7 nM); however, the successful enrichment of uranyl from this vast resource has been limited by the high concentrations of metal ions of similar size and charge, which makes it difficult to design a binding motif that is selective for uranyl. Here we report the design and rational development of a uranyl-binding protein using a computational screening process in the initial search for potential uranyl-binding sites. The engineered protein is thermally stable and offers very high affinity and selectivity for uranyl with a Kd of 7.4 femtomolar (fM) and >10,000-fold selectivity over other metal ions. We also demonstrated that the uranyl-binding protein can repeatedly sequester 30-60% of the uranyl in synthetic sea water. The chemical strategy employed here may be applied to engineer other selective metal-binding proteins for biotechnology and remediation applications.


  • Organizational Affiliation

    1] Department of Chemistry and Institute for Biophysical Dynamics, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA [2].


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
uranyl binding protein
A, B
82Methanothermobacter thermautotrophicus str. Delta HMutation(s): 4 
Gene Names: MTH_1690
UniProt
Find proteins for O27725 (Methanothermobacter thermautotrophicus (strain ATCC 29096 / DSM 1053 / JCM 10044 / NBRC 100330 / Delta H))
Explore O27725 
Go to UniProtKB:  O27725
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO27725
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.160 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 44.256α = 90
b = 47.034β = 90
c = 65.443γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
PHASESphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-12-11
    Type: Initial release
  • Version 1.1: 2014-05-21
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Data collection, Database references