2FFX

Structure of Human Ferritin L. Chain

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.210 

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This is version 1.3 of the entry. See complete history. 


Literature

Structure of human ferritin L chain

Wang, Z.M., Li, C., Ellenburg, M.P., Soistman, E.M., Ruble, J.R., Wright, B.S., Ho, J.X., Carter, D.C.

(2006) Acta Crystallogr D Biol Crystallogr 62: 800-806

  • DOI: https://doi.org/10.1107/S0907444906018294
  • Primary Citation of Related Structures:  
    2FFX, 2FG4, 2FG8

  • PubMed Abstract: 

    • Ferritin is the major iron-storage protein present in all cells. It generally contains 24 subunits, with different ratios of heavy chain (H) to light chain (L), in the shape of a hollow sphere hosting up to 4500 ferric Fe atoms inside. H-rich ferritins catalyse the oxidation of iron(II), while L-rich ferritins promote the nucleation and storage of iron(III) ...

    Ferritin is the major iron-storage protein present in all cells. It generally contains 24 subunits, with different ratios of heavy chain (H) to light chain (L), in the shape of a hollow sphere hosting up to 4500 ferric Fe atoms inside. H-rich ferritins catalyse the oxidation of iron(II), while L-rich ferritins promote the nucleation and storage of iron(III). Several X-ray structures have been determined, including those of L-chain ferritins from horse spleen (HoSF), recombinant L-chain ferritins from horse (HoLF), mouse (MoLF) and bullfrog (BfLF) as well as recombinant human H-chain ferritin (HuHF). Here, structures have been determined of two crystal forms of recombinant human L-chain ferritin (HuLF) obtained from native and perdeuterated proteins. The structures show a cluster of acidic residues at the ferrihydrite nucleation site and at the iron channel along the threefold axis. An ordered Cd2+ structure is observed within the iron channel, offering further insight into the route and mechanism of iron transport into the capsid. The loop between helices D and E, which is disordered in many other L-chain structures, is clearly visible in these two structures. The crystals generated from perdeuterated HuLF will be used for neutron diffraction studies.

    Organizational Affiliation: 

    New Century Pharmaceuticals Inc., 895 Martin Road, Huntsville, Alabama 35824, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ferritin light chainA [auth J]173Homo sapiensMutation(s): 0 
Gene Names: FTL
UniProt & NIH Common Fund Data Resources
Find proteins for P02792 (Homo sapiens)
Explore P02792 
Go to UniProtKB:  P02792
PHAROS:  P02792
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP02792
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.210 
  • Space Group: I 4 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 151.601α = 90
b = 151.601β = 90
c = 151.601γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
AMoREphasing
CNXrefinement
HKL-2000data reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-07-11
    Type: Initial release
  • Version 1.1: 2008-05-01
    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