Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 26689.45 
• Atom Count: 1733 
• Residue Count: 232 
• Unique protein chains: 2

3BQO

Crystal Structure of TRF1 TRFH domain and TIN2 peptide complex

• DOI: 10.2210/pdb3BQO/pdb

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2007-12-20 Released: 2008-02-19 
• Deposition Author(s): Chen, Y., Yang, Y., van Overbeek, M., Donigian, J.R., Baciu, P., de Lange, T., Lei, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.237 
• R-Value Work: 0.220 

Literature

A shared docking motif in TRF1 and TRF2 used for differential recruitment of telomeric proteins.

Chen, Y., Yang, Y., van Overbeek, M., Donigian, J.R., Baciu, P., de Lange, T., Lei, M.

(2008) Science 319: 1092-1096

• PubMed: 18202258 
• DOI: 10.1126/science.1151804
• Primary Citation of Related Structures:  
  3BUA, 3BU8


• PubMed Abstract: 
  

Mammalian telomeres are protected by a six-protein complex: shelterin. Shelterin contains two closely related proteins (TRF1 and TRF2), which recruit various proteins to telomeres. We dissect the interactions of TRF1 and TRF2 with their shared binding partner (TIN2) and other shelterin accessory factors. TRF1 recognizes TIN2 using a conserved molecular surface in its TRF homology (TRFH) domain. However, this same surface does not act as a TIN2 binding site in TRF2, and TIN2 binding to TRF2 is mediated by a region outside the TRFH domain. Instead, the TRFH docking site of TRF2 binds a shelterin accessory factor (Apollo), which does not interact with the TRFH domain of TRF1. Conversely, the TRFH domain of TRF1, but not of TRF2, interacts with another shelterin-associated factor: PinX1.

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Organizational Affiliation: 

Department of Biological Chemistry, University of Michigan Medical School, 1150 West Medical Center Drive, Ann Arbor, MI 48109, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Telomeric repeat-binding factor 1	A	211	Homo sapiens	Mutation(s): 0  Gene Names: TERF1 (PIN2, TRBF1, TRF, TRF1)
Find proteins for P54274 (Homo sapiens) Go to Gene View: TERF1 Go to UniProtKB:  P54274

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
TERF1-interacting nuclear factor 2	B	21	Homo sapiens	Mutation(s): 0  Gene Names: TINF2 (TIN2)
Find proteins for Q9BSI4 (Homo sapiens) Go to Gene View: TINF2 Go to UniProtKB:  Q9BSI4

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2 Å
• R-Value Free: 0.237 
• R-Value Work: 0.220 
• Space Group: P 6₁ 2 2

Unit Cell:

Length (Å)	Angle (°)
a = 117.105	α = 90.00
b = 117.105	β = 90.00
c = 88.018	γ = 120.00

Software Package:

Software Name	Purpose
PHASER	phasing
HKL-2000	data reduction
CNS	refinement
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-12-20 
• Released Date: 2008-02-19 
• Deposition Author(s): Chen, Y., Yang, Y., van Overbeek, M., Donigian, J.R., Baciu, P., de Lange, T., Lei, M.

Revision History 

• Version 1.0: 2008-02-19
  Type: Initial release
• Version 1.1: 2011-07-13
  Type: Version format compliance