1FHA

SOLVING THE STRUCTURE OF HUMAN H FERRITIN BY GENETICALLY ENGINEERING INTERMOLECULAR CRYSTAL CONTACTS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Observed: 0.205 

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This is version 1.5 of the entry. See complete history


Literature

Solving the structure of human H ferritin by genetically engineering intermolecular crystal contacts.

Lawson, D.M.Artymiuk, P.J.Yewdall, S.J.Smith, J.M.Livingstone, J.C.Treffry, A.Luzzago, A.Levi, S.Arosio, P.Cesareni, G.Thomas, C.D.Shaw, W.V.Harrison, P.M.

(1991) Nature 349: 541-544

  • DOI: https://doi.org/10.1038/349541a0
  • Primary Citation of Related Structures:  
    1FHA

  • PubMed Abstract: 

    Ferritin is important in iron homeostasis. Its twenty-four chains of two types, H and L, assemble as a hollow shell providing an iron-storage cavity. Ferritin molecules in cells containing high levels of iron tend to be rich in L chains, and may have a long-term storage function, whereas H-rich ferritins are more active in iron metabolism. The molecular basis for the greater activity of H-rich ferritins has until now been obscure, largely because the structure of H-chain ferritin has remained unknown owing to the difficulties in obtaining crystals ordered enough for X-ray crystallographic analysis. Here we report the three-dimensional structure of a human ferritin H-chain homopolymer. By genetically engineering a change in the sequence of the intermolecular contact region, we obtained crystals isomorphous with the homologous rat L ferritin and of high enough quality for X-ray diffraction analysis. The X-ray structure of human H ferritin shows a novel metal site embedded within each of its four-helix bundles and we suggest that ferroxidase activity associated with this site accounts for its rapid uptake of iron.


  • Organizational Affiliation

    Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University, Sheffield, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
FERRITIN183Homo sapiensMutation(s): 0 
EC: 1.16.3.1
UniProt & NIH Common Fund Data Resources
Find proteins for P02794 (Homo sapiens)
Explore P02794 
Go to UniProtKB:  P02794
PHAROS:  P02794
GTEx:  ENSG00000167996 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02794
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Observed: 0.205 
  • Space Group: F 4 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184.8α = 90
b = 184.8β = 90
c = 184.8γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1992-07-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2011-11-16
    Changes: Atomic model
  • Version 1.4: 2012-02-29
    Changes: Database references
  • Version 1.5: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other