1SQ3

Crystal structures of a novel open pore ferritin from the hyperthermophilic Archaeon Archaeoglobus fulgidus.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 

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This is version 1.4 of the entry. See complete history. 


Literature

Crystal structures of a tetrahedral open pore ferritin from the hyperthermophilic archaeon Archaeoglobus fulgidus.

Johnson, E., Cascio, D., Sawaya, M.R., Gingery, M., Schroder, I.

(2005) Structure 13: 637-648

  • DOI: 10.1016/j.str.2005.01.019
  • Primary Citation of Related Structures:  
    1S3Q, 1SQ3

  • PubMed Abstract: 

    • Ferritins are known as important iron storage/detoxification proteins and are widely found in living organisms. This report details the 2.1 A resolution native and 2.7 A resolution iron bound structures of the ferritin from the hyperthermophilic Archaeon Archaeoglobus fulgidus, and represents the first structure of a ferritin from an archaeon, or a hyperthermophilic organism ...

    Ferritins are known as important iron storage/detoxification proteins and are widely found in living organisms. This report details the 2.1 A resolution native and 2.7 A resolution iron bound structures of the ferritin from the hyperthermophilic Archaeon Archaeoglobus fulgidus, and represents the first structure of a ferritin from an archaeon, or a hyperthermophilic organism. The A. fulgidus ferritin (AfFtn) monomer has a high degree of structural similarity with archetypal ferritins from E. coli and humans, but the AfFtn quaternary structure is novel; 24 subunits assemble into a shell having tetrahedral (2-3) rather than the canonical octahedral (4-3-2) symmetry of archetypal ferritins. The difference in assembly opens four large (approximately 45 A) pores in the AfFtn shell. Two nonconservative amino acid substitutions may be critical for stabilizing the tetrahedral form.

    Organizational Affiliation: 

    Department of Microbiology, Immunology, and Molecular Genetics, University of California, Los Angeles, Los Angeles, California 90095, USA. ericj@caltech.edu



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ferritin
A, B, C, D, E, F, G, H, I, J, K, L
A, B, C, D, E, F, G, H, I, J, K, L
173Archaeoglobus fulgidus DSM 4304Mutation(s): 0 
Gene Names: Ftn, AF_0834
UniProt
Find proteins for O29424 (Archaeoglobus fulgidus (strain ATCC 49558 / DSM 4304 / JCM 9628 / NBRC 100126 / VC-16))
Explore O29424 
Go to UniProtKB:  O29424
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO29424
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FE
Query on FE
Download Ideal Coordinates CCD File 
AA [auth E],
BA [auth F],
CA [auth F],
DA [auth F],
EA [auth G],
AA [auth E],
BA [auth F],
CA [auth F],
DA [auth F],
EA [auth G],
FA [auth G],
GA [auth G],
HA [auth H],
IA [auth H],
JA [auth H],
KA [auth I],
LA [auth I],
M [auth A],
MA [auth I],
N [auth A],
NA [auth J],
O [auth A],
OA [auth J],
P [auth B],
PA [auth J],
Q [auth B],
QA [auth K],
R [auth B],
RA [auth K],
S [auth C],
SA [auth K],
T [auth C],
TA [auth L],
U [auth C],
UA [auth L],
V [auth D],
VA [auth L],
W [auth D],
X [auth D],
Y [auth E],
Z [auth E]
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H, I, J, K, L
A, B, C, D, E, F, G, H, I, J, K, L
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.177 
  • R-Value Observed: 0.179 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184.502α = 90
b = 190.243β = 90
c = 179.407γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-04-12
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Source and taxonomy, Version format compliance
  • Version 1.3: 2013-06-05
    Changes: Other
  • Version 1.4: 2017-10-11
    Changes: Refinement description