2X17

The X-ray structure of Ferritin from Pyrococcus furiosus loaded with Ag(I)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.260 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Silver Ion Incorporation and Nanoparticle Formation Inside the Cavity of Pyrococcus Furiosus Ferritin: Structural and Size-Distribution Analyses.

Kasyutich, O.Ilari, A.Fiorillo, A.Tatchev, D.Hoell, A.Ceci, P.

(2010) J.Am.Chem.Soc. 132: 3621

  • DOI: 10.1021/ja910918b

  • PubMed Abstract: 
  • Highly symmetrical protein cage architectures from three different iron storage proteins, heavy and light human ferritin chains (HuHFt and HuLFt) and ferritin from the hyperthemophilic bacterium Pyrococcus furiosus (PfFt), have been used as models fo ...

    Highly symmetrical protein cage architectures from three different iron storage proteins, heavy and light human ferritin chains (HuHFt and HuLFt) and ferritin from the hyperthemophilic bacterium Pyrococcus furiosus (PfFt), have been used as models for understanding the molecular basis of silver ion deposition and metal core formation inside the protein cavity. Biomineralization using protein cavities is an important issue for the fabrication of biometamaterials under mild synthetic conditions. Silver nanoparticles (AgNPs) were produced with high yields within PfFt but not within HuHFt and HuLFt. To explain the molecular basis of silver incorporation, the X-ray crystal structure of Ag-containing PfFt has been solved. This is the first structure of a silver containing ferritin reported to date, and it revealed the presence of specific binding and nucleation sites of Ag(I) that are not conserved in other ferritin templates. The AgNP encapsulated by PfFt were further characterized by the combined use of different physical-chemical techniques. These showed that the AgNPs are endowed with a narrow size distribution (2.1 +/- 0.4 nm), high stability in water solution at millimolar concentration, and high thermal stability. These properties make the AgNP obtained within PftFt exploitable for a range of applications, in fields as diverse as catalysis in water, preparation of metamaterials, and in vivo diagnosis and antibacterial or tumor therapy.


    Organizational Affiliation

    University of Bristol, Physics Department, HH Wills Physics Laboratory, Tyndall Avenues, Bristol, BS8 1TL, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE FERRITIN HOMOLOG
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, G, H, I, J, K, L, M, N, O, P, Q, R, Y, Z
173Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1)Mutation(s): 0 
Find proteins for Q8U2T8 (Pyrococcus furiosus (strain ATCC 43587 / DSM 3638 / JCM 8422 / Vc1))
Go to UniProtKB:  Q8U2T8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AG
Query on AG

Download SDF File 
Download CCD File 
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, G, H, I, J, K, L, M, N, O, P, Q, R, Y, Z
SILVER ION
Ag
FOIXSVOLVBLSDH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.260 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 157.681α = 90.00
b = 157.681β = 90.00
c = 246.437γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MOLREPphasing
DENZOdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-21
    Type: Initial release
  • Version 1.1: 2011-07-27
    Type: Refinement description, Version format compliance