1W0T

hTRF1 DNA-binding domain in complex with telomeric DNA.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

How the Human Telomeric Proteins Trf1 and Trf2 Recognize Telomeric DNA: A View from High-Resolution Crystal Structures

Court, R.I.Chapman, L.M.Fairall, L.Rhodes, D.

(2005) EMBO Rep 6: 39

  • DOI: 10.1038/sj.embor.7400314
  • Primary Citation of Related Structures:  
    1W0T, 1W0U

  • PubMed Abstract: 
  • Human telomeres consist of tandem arrays of TTAGGG sequence repeats that are specifically bound by two proteins, TRF1 and TRF2. They bind to DNA as preformed homodimers and have the same architecture in which the DNA-binding domains (Dbds) form independent structural units ...

    Human telomeres consist of tandem arrays of TTAGGG sequence repeats that are specifically bound by two proteins, TRF1 and TRF2. They bind to DNA as preformed homodimers and have the same architecture in which the DNA-binding domains (Dbds) form independent structural units. Despite these similarities, TRF1 and TRF2 have different functions at telomeres. The X-ray crystal structures of both TRF1- and TRF2-Dbds in complex with telomeric DNA (2.0 and 1.8 angstroms resolution, respectively) show that they recognize the same TAGGGTT binding site by means of homeodomains, as does the yeast telomeric protein Rap1p. Two of the three G-C base pairs that characterize telomeric repeats are recognized specifically and an unusually large number of water molecules mediate protein-DNA interactions. The binding of the TRF2-Dbd to the DNA double helix shows no distortions that would account for the promotion of t-loops in which TRF2 has been implicated.


    Organizational Affiliation

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



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TELOMERIC REPEAT BINDING FACTOR 1A, B53Homo sapiensMutation(s): 0 
Gene Names: TERF1PIN2TRBF1TRFTRF1
UniProt & NIH Common Fund Data Resources
Find proteins for P54274 (Homo sapiens)
Explore P54274 
Go to UniProtKB:  P54274
PHAROS:  P54274
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP54274
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*CP*TP*GP*TP*TP*AP*GP*GP*GP*TP *TP*AP*GP*GP*GP*TP*TP*AP*G)-3'C19N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
5'-D(*TP*CP*TP*AP*AP*CP*CP*CP*TP*AP *AP*CP*CP*CP*TP*AP*AP*CP*A)-3'D19N/A
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.252 
  • R-Value Observed: 0.252 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.443α = 90
b = 72.36β = 90
c = 116.706γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
SOLVEphasing
autoSHARPphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-12-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance