1OVT

REFINED CRYSTALLOGRAPHIC STRUCTURE OF HEN OVOTRANSFERRIN AT 2.4 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of diferric hen ovotransferrin at 2.4 A resolution.

Kurokawa, H.Mikami, B.Hirose, M.

(1995) J.Mol.Biol. 254: 196-207

  • DOI: 10.1006/jmbi.1995.0611

  • PubMed Abstract: 
  • The three-dimensional structure of diferric hen ovotransferrin has been determined by X-ray crystallography at 2.4 A resolution. The structure was solved by molecular replacement, using the coordinates of diferric human lactoferrin as a search model. ...

    The three-dimensional structure of diferric hen ovotransferrin has been determined by X-ray crystallography at 2.4 A resolution. The structure was solved by molecular replacement, using the coordinates of diferric human lactoferrin as a search model. Several rounds of simulated annealing and restrained least-squares refinement have resulted in a model structure with an R-factor of 0.171 for the data between 11.0 and 2.4 A resolution. The model comprises 5284 protein atoms (residues 5 to 686), 2 Fe3+, 2 CO3(2)- and 132 water molecules. The overall structure of ovotransferrin is similar to those of human lactoferrin and rabbit serum transferrin, being folded into two homologous lobes, each containing two dissimilar domains with one Fe3+ and one CO3(2)- bound at a specific site in each interdomain cleft. However, the relative orientation of the two lobes, which may be related to the class specificity of transferrins to receptors, is different from either human lactoferrin or rabbit serum transferrin. The angle of the relative orientation in ovotransferrin is increased by 6.8 degrees and 15.7 degrees as compared with to those in rabbit serum transferrin and human lactoferrin, respectively. Interdomain Lys209-Lys301 and Gln541-Lys638 interactions are found near the metal binding site of each lobe. The interlobe interactions and their role in the stabilization of iron binding are discussed.


    Related Citations: 
    • Structural Evidence for a Ph Sensitive Di-Lysine Trigger in the Hen Ovotransferrin N-Lobe: Implications for Transferrin Iron Release
      Dewan, J.C.,Mikami, B.,Hirose, M.,Sacchettini, J.C.
      (1993) Biochemistry 32: 11963
    • Crystallization of N-Terminal Lobe of Ovotransferrin
      Mikami, B.,Hirose, M.
      (1990) J.Biochem.(Tokyo) 108: 907


    Organizational Affiliation

    Research Institute for Food Science, Kyoto University, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
OVOTRANSFERRIN
A
686Gallus gallusN/A
Find proteins for P02789 (Gallus gallus)
Go to UniProtKB:  P02789
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FE
Query on FE

Download SDF File 
Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
CO3
Query on CO3

Download SDF File 
Download CCD File 
A
CARBONATE ION
C O3
BVKZGUZCCUSVTD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.171 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 74.190α = 90.00
b = 60.940β = 83.95
c = 90.240γ = 90.00
Software Package:
Software NamePurpose
XENGENdata collection
X-PLORphasing
X-PLORrefinement
XENGENdata reduction
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-09-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance