4CHK

Crystal Structure of the ARF5 oligomerization domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

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Literature

Structural Basis for Oligomerisation of Auxin Transcriptional Regulators

Nanao, M.H.Vinos-Poyo, T.Brunoud, G.Thevenon, E.Mazzoleni, M.Mast, D.Laine, S.Wang, S.Hagen, G.Li, H.Guilfoyle, T.J.Parcy, F.Vernoux, T.Dumas, R.

(2014) Nat Commun 5: 3617

  • DOI: 10.1038/ncomms4617
  • Primary Citation of Related Structures:  
    4CHK

  • PubMed Abstract: 
  • The plant hormone auxin is a key morphogenetic regulator acting from embryogenesis onwards. Transcriptional events in response to auxin are mediated by the auxin response factor (ARF) transcription factors and the Aux/IAA (IAA) transcriptional repres ...

    The plant hormone auxin is a key morphogenetic regulator acting from embryogenesis onwards. Transcriptional events in response to auxin are mediated by the auxin response factor (ARF) transcription factors and the Aux/IAA (IAA) transcriptional repressors. At low auxin concentrations, IAA repressors associate with ARF proteins and recruit corepressors that prevent auxin-induced gene expression. At higher auxin concentrations, IAAs are degraded and ARFs become free to regulate auxin-responsive genes. The interaction between ARFs and IAAs is thus central to auxin signalling and occurs through the highly conserved domain III/IV present in both types of proteins. Here, we report the crystal structure of ARF5 domain III/IV and reveal the molecular determinants of ARF-IAA interactions. We further provide evidence that ARFs have the potential to oligomerize, a property that could be important for gene regulation in response to auxin.


    Organizational Affiliation

    1] CNRS, Laboratoire de Physiologie Cellulaire and Végétale, UMR 5168, Grenoble 38054, France [2] Univ. Grenoble Alpes, LPCV, Grenoble F-38054, France [3] CEA, DSV, iRTSV, LPCV, Grenoble F-38054, France [4] INRA, LPCV, Grenoble F-38054, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
AUXIN RESPONSE FACTOR 5ABCDEFGH127Arabidopsis thalianaMutation(s): 0 
Gene Names: ARF5IAA24MPAt1g19850F6F9.10
Find proteins for P93024 (Arabidopsis thaliana)
Explore P93024 
Go to UniProtKB:  P93024
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.221 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 196.264α = 90
b = 86.438β = 112.71
c = 91.371γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
SHARPphasing
SHELXDphasing
BUSTERrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-04-16
    Type: Initial release