Biological Assembly 1  

Global Symmetry: Octahedral - O  (3D View)
Global Stoichiometry: Homo 24-mer - A24 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 21.38 kDa 
• Atom Count: 1,571 
• Modelled Residue Count: 171 
• Deposited Residue Count: 174 
• Unique protein chains: 1

 2FG4

Structure of Human Ferritin L Chain

• PDB DOI:  https://doi.org/10.2210/pdb2FG4/pdb

• Classification: METAL BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-12-21 Released: 2006-07-04 
• Deposition Author(s): Wang, Z., Li, C., Ellenburg, M., Ruble, J., Ho, J.X., Carter, D.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.220 
• R-Value Work: 0.194 

Literature

Structure of human ferritin L chain.

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

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

• PubMed: 16790936 
• 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). 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ferritin light chain	A	174	Homo sapiens	Mutation(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

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CD	B [auth A], C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A]	CADMIUM ION Cd WLZRMCYVCSSEQC-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.220 
• R-Value Work: 0.194 
• Space Group: I 4 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 152.865	α = 90
b = 152.865	β = 90
c = 152.865	γ = 90

Software Package:

Software Name	Purpose
CNX	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-07-04 
Deposition Author(s): Wang, Z., Li, C., Ellenburg, M., Ruble, J., Ho, J.X., Carter, D.C.

Revision History  

• Version 1.0: 2006-07-04
  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