Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 27.60 kDa 
• Atom Count: 1623 
• Residue Count: 205 
• Unique protein chains: 1

5MPI

Structural Basis of Gene Regulation by the Grainyhead Transcription Factor Superfamily

• DOI: 10.2210/pdb5MPI/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2016-12-16 Released: 2018-01-17 
• Deposition Author(s): Ming, Q., Roske, Y., Schuetz, A., Walentin, K., Ibraimi, I., Schmidt-Ott, K.M., Heinemann, U.

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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 

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

• PubMed: 29309642 
• 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 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Grainyhead-like protein 1 homolog	A	238	Homo sapiens	Mutation(s): 2  Gene Names: GRHL1, LBP32, MGR, TFCP2L2
Find proteins for Q9NZI5 (Homo sapiens) Explore Q9NZI5  Go to UniProtKB:  Q9NZI5
NIH Common Fund Data Resources
PHAROS:  Q9NZI5 GTEx:  ENSG00000134317

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 = 104.405	α = 90
b = 104.405	β = 90
c = 116.254	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2016-12-16 
• Released Date: 2018-01-17 
Deposition Author(s): Ming, Q., Roske, Y., Schuetz, A., Walentin, K., Ibraimi, I., Schmidt-Ott, K.M., Heinemann, U.

Revision History 

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