5MPI

Structural Basis of Gene Regulation by the Grainyhead Transcription Factor Superfamily


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 

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This is version 1.1 of the entry. See complete history


Literature

Structural basis of gene regulation by the Grainyhead/CP2 transcription factor family.

Ming, Q.Roske, Y.Schuetz, A.Walentin, K.Ibraimi, I.Schmidt-Ott, K.M.Heinemann, U.

(2018) Nucleic Acids Res 46: 2082-2095

  • DOI: 10.1093/nar/gkx1299
  • Primary Citation of Related Structures:  
    5MPI, 5MPH, 5MPF, 5MR7

  • PubMed Abstract: 
  • Grainyhead (Grh)/CP2 transcription factors are highly conserved in multicellular organisms as key regulators of epithelial differentiation, organ development and skin barrier formation. In addition, they have been implicated as being tumor suppressors in ...

    Grainyhead (Grh)/CP2 transcription factors are highly conserved in multicellular organisms as key regulators of epithelial differentiation, organ development and skin barrier formation. In addition, they have been implicated as being tumor suppressors in a variety of human cancers. Despite their physiological importance, little is known about their structure and DNA binding mode. Here, we report the first structural study of mammalian Grh/CP2 factors. Crystal structures of the DNA-binding domains of grainyhead-like (Grhl) 1 and Grhl2 reveal a closely similar conformation with immunoglobulin-like core. Both share a common fold with the tumor suppressor p53, but differ in important structural features. The Grhl1 DNA-binding domain binds duplex DNA containing the consensus recognition element in a dimeric arrangement, supporting parsimonious target-sequence selection through two conserved arginine residues. We elucidate the molecular basis of a cancer-related mutation in Grhl1 involving one of these arginines, which completely abrogates DNA binding in biochemical assays and transcriptional activation of a reporter gene in a human cell line. Thus, our studies establish the structural basis of DNA target-site recognition by Grh transcription factors and reveal how tumor-associated mutations inactivate Grhl proteins. They may serve as points of departure for the structure-based development of Grh/CP2 inhibitors for therapeutic applications.


    Organizational Affiliation

    Helmholtz Protein Sample Production Facility, Max Delbrück Center for Molecular Medicine, Robert-Rössle-Str. 10, 13125 Berlin, Germany.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Grainyhead-like protein 1 homolog A238Homo sapiensMutation(s): 2 
Gene Names: GRHL1LBP32MGRTFCP2L2
Find proteins for Q9NZI5 (Homo sapiens)
Explore Q9NZI5 
Go to UniProtKB:  Q9NZI5
NIH Common Fund Data Resources
PHAROS:  Q9NZI5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.224 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.405α = 90
b = 104.405β = 90
c = 116.254γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-17
    Type: Initial release
  • Version 1.1: 2018-03-14
    Changes: Database references