5YEH

Crystal structure of CTCF ZFs4-8-eCBS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Molecular mechanism of directional CTCF recognition of a diverse range of genomic sites

Yin, M.Wang, J.Wang, M.Li, X.Zhang, M.Wu, Q.Wang, Y.

(2017) Cell Res 27: 1365-1377

  • DOI: 10.1038/cr.2017.131
  • Primary Citation of Related Structures:  
    5YEL, 5YEF, 5YEH, 5YEG

  • PubMed Abstract: 
  • CTCF, a conserved 3D genome architecture protein, determines proper genome-wide chromatin looping interactions through directional binding to specific sequence elements of four modules within numerous CTCF-binding sites (CBSs) by its 11 zinc fingers (ZFs ...

    CTCF, a conserved 3D genome architecture protein, determines proper genome-wide chromatin looping interactions through directional binding to specific sequence elements of four modules within numerous CTCF-binding sites (CBSs) by its 11 zinc fingers (ZFs). Here, we report four crystal structures of human CTCF in complex with CBSs of the protocadherin (Pcdh) clusters. We show that directional CTCF binding to cognate CBSs of the Pcdh enhancers and promoters is achieved through inserting its ZF3, ZFs 4-7, and ZFs 9-11 into the major groove along CBSs, resulting in a sequence-specific recognition of module 4, modules 3 and 2, and module 1, respectively; and ZF8 serves as a spacer element for variable distances between modules 1 and 2. In addition, the base contact with the asymmetric "A" in the central position of modules 2-3, is essential for directional recognition of the CBSs with symmetric core sequences but lacking module 1. Furthermore, CTCF tolerates base changes at specific positions within the degenerated CBS sequences, permitting genome-wide CTCF binding to a diverse range of CBSs. Together, these complex structures provide important insights into the molecular mechanisms for the directionality, diversity, flexibility, dynamics, and conservation of multivalent CTCF binding to its cognate sites across the entire human genome.


    Organizational Affiliation

    Collaborative Innovation Center of Genetics and Development, Shanghai 200438, China.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcriptional repressor CTCF AB142Homo sapiensMutation(s): 0 
Gene Names: CTCF
Find proteins for P49711 (Homo sapiens)
Explore P49711 
Go to UniProtKB:  P49711
NIH Common Fund Data Resources
PHAROS:  P49711
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*AP*CP*GP*GP*TP*TP*TP*CP*CP*GP*CP*TP*AP*GP*AP*GP*GP*GP*CP*G)-3')C, E20synthetic construct
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      DNA (5'-D(*TP*CP*GP*CP*CP*CP*TP*CP*TP*AP*GP*CP*GP*GP*AP*AP*AP*CP*CP*G)-3')D, F20synthetic construct
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.33 Å
      • R-Value Free: 0.270 
      • R-Value Work: 0.222 
      • R-Value Observed: 0.224 
      • Space Group: P 1
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 45.845α = 81.17
      b = 54.876β = 80.11
      c = 66.938γ = 79.72
      Software Package:
      Software NamePurpose
      PHENIXrefinement
      HKL-3000data reduction
      HKL-3000data scaling
      PHASERphasing

      Structure Validation

      View Full Validation Report



      Entry History & Funding Information

      Deposition Data


      Funding OrganizationLocationGrant Number
      National Natural Science Foundation of ChinaChina31630015
      National Natural Science Foundation of ChinaChina91440201
      National Natural Science Foundation of ChinaChina31571335
      National Natural Science Foundation of ChinaChina31400640
      National Natural Science Foundation of ChinaChina31630039
      National Natural Science Foundation of ChinaChina91640118
      National Natural Science Foundation of ChinaChina31470820

      Revision History 

      • Version 1.0: 2017-11-29
        Type: Initial release
      • Version 1.1: 2019-01-23
        Changes: Data collection, Structure summary