1H6P

Dimeristion domain from human TRF2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the Trfh Dimerization Domain of the Human Telomere Proteins Trf1 and Trf2

Fairall, L.Chapman, L.Moss, H.de Lange, T.Rhodes, D.

(2001) Mol.Cell 8: 351-361

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • TRF1 and TRF2 are key components of vertebrate telomeres. They bind to double-stranded telomeric DNA as homodimers. Dimerization involves the TRF homology (TRFH) domain, which also mediates interactions with other telomeric proteins. The crystal stru ...

    TRF1 and TRF2 are key components of vertebrate telomeres. They bind to double-stranded telomeric DNA as homodimers. Dimerization involves the TRF homology (TRFH) domain, which also mediates interactions with other telomeric proteins. The crystal structures of the dimerization domains from human TRF1 and TRF2 were determined at 2.9 and 2.2 A resolution, respectively. Despite a modest sequence identity, the two TRFH domains have the same entirely alpha-helical architecture, resembling a twisted horseshoe. The dimerization interfaces feature unique interactions that prevent heterodimerization. Mutational analysis of TRF1 corroborates the structural data and underscores the importance of the TRFH domain in dimerization, DNA binding, and telomere localization. A possible structural homology between the TRFH domain of fission yeast telomeric protein Taz1 with those of the vertebrate TRFs is suggested.


    Related Citations: 
    • Telomeric Localisation of Trf2, a Novel Human Telobox Protein
      Bilaud, T.,Brun, C.,Ancelin, K.,Koering, C.E.,Laroche, T.,Gilson, E.
      (1997) Nat.Genet. 17: 236
    • Human Telomere Contain Two Distinct Myb-Related Proteins, Trf1 and Trf2
      Broccoli, D.,Smogorzewska, A.,Chong, L.,de Lange, T.
      (1997) Nat.Genet. 17: 231


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Hills Road, CB2 2QH, Cambridge, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TELOMERIC REPEAT BINDING FACTOR 2
A, B
203Homo sapiensMutation(s): 0 
Gene Names: TERF2 (TRBF2, TRF2)
Find proteins for Q15554 (Homo sapiens)
Go to Gene View: TERF2
Go to UniProtKB:  Q15554
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: 2.2 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.235 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 117.041α = 90.00
b = 80.284β = 101.95
c = 52.816γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing
CNSrefinement
CCP4phasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-09-05
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2018-06-13
    Type: Data collection, Database references