4M7C

Crystal structure of the TRF2-binding motif of SLX4 in complex with the TRFH domain of TRF2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


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Literature

SLX4 Assembles a Telomere Maintenance Toolkit by Bridging Multiple Endonucleases with Telomeres

Wan, B.Yin, J.Horvath, K.Sarkar, J.Chen, Y.Wu, J.Wan, K.Lu, J.Gu, P.Yu, E.Y.Lue, N.F.Chang, S.Liu, Y.Lei, M.

(2013) Cell Rep 4: 861-869

  • DOI: 10.1016/j.celrep.2013.08.017
  • Primary Citation of Related Structures:  
    4M7C

  • PubMed Abstract: 
  • SLX4 interacts with several endonucleases to resolve structural barriers in DNA metabolism. SLX4 also interacts with telomeric protein TRF2 in human cells. The molecular mechanism of these interactions at telomeres remains unknown. Here, we report the crystal structure of the TRF2-binding motif of SLX4 (SLX4TBM) in complex with the TRFH domain of TRF2 (TRF2TRFH) and map the interactions of SLX4 with endonucleases SLX1, XPF, and MUS81 ...

    SLX4 interacts with several endonucleases to resolve structural barriers in DNA metabolism. SLX4 also interacts with telomeric protein TRF2 in human cells. The molecular mechanism of these interactions at telomeres remains unknown. Here, we report the crystal structure of the TRF2-binding motif of SLX4 (SLX4TBM) in complex with the TRFH domain of TRF2 (TRF2TRFH) and map the interactions of SLX4 with endonucleases SLX1, XPF, and MUS81. TRF2 recognizes a unique HxLxP motif on SLX4 via the peptide-binding site in its TRFH domain. Telomeric localization of SLX4 and associated nucleases depend on the SLX4-endonuclease and SLX4-TRF2 interactions and the protein levels of SLX4 and TRF2. SLX4 assembles an endonuclease toolkit that negatively regulates telomere length via SLX1-catalyzed nucleolytic resolution of telomere DNA structures. We propose that the SLX4-TRF2 complex serves as a double-layer scaffold bridging multiple endonucleases with telomeres for recombination-based telomere maintenance.


    Organizational Affiliation

    State Key Laboratory of Molecular Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China; National Center for Protein Science Shanghai, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 320 Yueyang Road, Shanghai 200031, China; Howard Hughes Medical Institute, University of Michigan Medical School, 1150 W. Medical Center Drive, Ann Arbor, MI 48109, USA; Department of Biological Chemistry, University of Michigan Medical School, 1150 W. Medical Center Drive, Ann Arbor, MI 48109, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Telomeric repeat-binding factor 2A, B200Homo sapiensMutation(s): 0 
Gene Names: TERF2TRBF2TRF2
Find proteins for Q15554 (Homo sapiens)
Explore Q15554 
Go to UniProtKB:  Q15554
NIH Common Fund Data Resources
PHAROS:  Q15554
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Peptide from Structure-specific endonuclease subunit SLX4C, D13Homo sapiensMutation(s): 0 
Gene Names: SLX4BTBD12KIAA1784KIAA1987
Find proteins for Q8IY92 (Homo sapiens)
Explore Q8IY92 
Go to UniProtKB:  Q8IY92
NIH Common Fund Data Resources
PHAROS:  Q8IY92
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.216 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.591α = 90
b = 69.183β = 94.73
c = 118.078γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-3000data collection
HKL-3000data reduction
HKL-3000data scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-09-25
    Type: Initial release