5NQV

Structure of the Arabidopsis Thaliana TOPLESS N-terminal domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the Arabidopsis TOPLESS corepressor provides insight into the evolution of transcriptional repression.

Martin-Arevalillo, R.Nanao, M.H.Larrieu, A.Vinos-Poyo, T.Mast, D.Galvan-Ampudia, C.Brunoud, G.Vernoux, T.Dumas, R.Parcy, F.

(2017) Proc Natl Acad Sci U S A 114: 8107-8112

  • DOI: 10.1073/pnas.1703054114
  • Primary Citation of Related Structures:  
    5NQS, 5NQV

  • PubMed Abstract: 
  • Transcriptional repression involves a class of proteins called corepressors that link transcription factors to chromatin remodeling complexes. In plants such as Arabidopsis thaliana , the most prominent corepressor is TOPLESS (TPL), which plays a key role in hormone signaling and development ...

    Transcriptional repression involves a class of proteins called corepressors that link transcription factors to chromatin remodeling complexes. In plants such as Arabidopsis thaliana , the most prominent corepressor is TOPLESS (TPL), which plays a key role in hormone signaling and development. Here we present the crystallographic structure of the Arabidopsis TPL N-terminal region comprising the LisH and CTLH (C-terminal to LisH) domains and a newly identified third region, which corresponds to a CRA domain. Comparing the structure of TPL with the mammalian TBL1, which shares a similar domain structure and performs a parallel corepressor function, revealed that the plant TPLs have evolved a new tetramerization interface and unique and highly conserved surface for interaction with repressors. Using site-directed mutagenesis, we validated those surfaces in vitro and in vivo and showed that TPL tetramerization and repressor binding are interdependent. Our results illustrate how evolution used a common set of protein domains to create a diversity of corepressors, achieving similar properties with different molecular solutions.


    Organizational Affiliation

    Laboratoire de Physiologie Cellulaire et Végétale, Université Grenoble Alpes, CNRS, Commissariat à l'Energie Atomique et aux Energies Alternatives/Biosciences and Biotechnology Institute of Grenoble, Institut National de la Recherche Agronomique (INRA), F-38000 Grenoble, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein TOPLESS ABCD210Arabidopsis thalianaMutation(s): 0 
Gene Names: TPLWSIP1At1g15750F7H2.9
Find proteins for Q94AI7 (Arabidopsis thaliana)
Explore Q94AI7 
Go to UniProtKB:  Q94AI7
Protein Feature View
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
EAR motif of IAA27 EFGH11synthetic constructMutation(s): 0 
Find proteins for Q9ZSY8 (Arabidopsis thaliana)
Explore Q9ZSY8 
Go to UniProtKB:  Q9ZSY8
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.190 
  • R-Value Observed: 0.191 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 94.1α = 90
b = 94.1β = 90
c = 298.03γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-07-26
    Type: Initial release
  • Version 1.1: 2017-08-02
    Changes: Database references