Crystal structure of the Cu-adduct of human H-Ferritin variant MIC1 labeled with a dansyl fluorophore

Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.229 

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Re-engineering protein interfaces yields copper-inducible ferritin cage assembly.

Huard, D.J.Kane, K.M.Tezcan, F.A.

(2013) Nat Chem Biol 9: 169-176

  • DOI: https://doi.org/10.1038/nchembio.1163
  • Primary Citation of Related Structures:  
    4DYX, 4DYY, 4DYZ, 4DZ0

  • PubMed Abstract: 

    The ability to chemically control protein-protein interactions would allow the interrogation of dynamic cellular processes and lead to a better understanding and exploitation of self-assembling protein architectures. Here we introduce a new engineering strategy--reverse metal-templated interface redesign (rMeTIR)--that transforms a natural protein-protein interface into one that only engages in selective response to a metal ion. We have applied rMeTIR to render the self-assembly of the cage-like protein ferritin controllable by divalent copper binding, which has allowed the study of the structure and stability of the isolated ferritin monomer, the demonstration of the primary role of conserved hydrogen-bonding interactions in providing geometric specificity for cage assembly and the uniform chemical modification of the cage interior under physiological conditions. Notably, copper acts as a structural template for ferritin assembly in a manner that is highly reminiscent of RNA sequences that template virus capsid formation.

  • Organizational Affiliation

    Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ferritin heavy chain172Homo sapiensMutation(s): 8 
Gene Names: FTH1FTHFTHL6OK/SW-cl.84PIG15
UniProt & NIH Common Fund Data Resources
Find proteins for P02794 (Homo sapiens)
Explore P02794 
Go to UniProtKB:  P02794
PHAROS:  P02794
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02794
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.300 
  • R-Value Work: 0.224 
  • R-Value Observed: 0.229 
  • Space Group: F 4 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 180.434α = 90
b = 180.434β = 90
c = 180.434γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PDB_EXTRACTdata extraction
Blu-Icedata collection

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-01-23
    Type: Initial release
  • Version 1.1: 2013-02-13
    Changes: Database references
  • Version 1.2: 2013-03-06
    Changes: Database references