3AJP

Crystal structure of human H ferritin E140A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The universal mechanism for iron translocation to the ferroxidase site in ferritin, which is mediated by the well conserved transit site

Masuda, T.Goto, F.Yoshihara, T.Mikami, B.

(2010) Biochem.Biophys.Res.Commun. 400: 94-99

  • DOI: 10.1016/j.bbrc.2010.08.017
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ferritins are ubiquitous iron storage proteins. Recently, we identified a novel metal-binding site, transit site, in the crystal structure of phytoferritin. To elucidate the function of the transit site in ferritin from other species, we prepared tra ...

    Ferritins are ubiquitous iron storage proteins. Recently, we identified a novel metal-binding site, transit site, in the crystal structure of phytoferritin. To elucidate the function of the transit site in ferritin from other species, we prepared transit-site-deficient mutants of human H ferritin, E140A and E140Q, and their iron oxidation kinetics was analyzed. The initial velocities of iron oxidization were reduced in the variants, especially in E140Q. The crystal structure of E140Q showed that the side chain of the mutated Gln140 was fixed by a hydrogen bond, whereas that of native Glu140 was flexible. These results suggest that the conserved transit site also has a function to assist with the metal ion sequestration to the ferroxidase site in ferritins from vertebrates.


    Organizational Affiliation

    Laboratory of Food Quality Design and Development, Division of Agronomy and Horticultural Science, Graduate School of Agriculture, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan. masutaro@kais.kyoto-u.ac.jp




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ferritin heavy chain
A
182Homo sapiensMutation(s): 1 
Gene Names: FTH1 (FTH, FTHL6)
EC: 1.16.3.1
Find proteins for P02794 (Homo sapiens)
Go to Gene View: FTH1
Go to UniProtKB:  P02794
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.901 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.178 
  • Space Group: F 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 182.974α = 90.00
b = 182.974β = 90.00
c = 182.974γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHENIXrefinement
CNSphasing
CNSrefinement
HKL-2000data scaling
HKL-2000data collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2010-06-11 
  • Released Date: 2010-08-25 
  • Deposition Author(s): Masuda, T., Mikami, B.

Revision History 

  • Version 1.0: 2010-08-25
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance