6GYT

Transcription factor dimerization activates the p300 acetyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Transcription factor dimerization activates the p300 acetyltransferase.

Ortega, E.Rengachari, S.Ibrahim, Z.Hoghoughi, N.Gaucher, J.Holehouse, A.S.Khochbin, S.Panne, D.

(2018) Nature 562: 538-544

  • DOI: 10.1038/s41586-018-0621-1
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The transcriptional co-activator p300 is a histone acetyltransferase (HAT) that is typically recruited to transcriptional enhancers and regulates gene expression by acetylating chromatin. Here we show that the activation of p300 directly depends on t ...

    The transcriptional co-activator p300 is a histone acetyltransferase (HAT) that is typically recruited to transcriptional enhancers and regulates gene expression by acetylating chromatin. Here we show that the activation of p300 directly depends on the activation and oligomerization status of transcription factor ligands. Using two model transcription factors, IRF3 and STAT1, we demonstrate that transcription factor dimerization enables the trans-autoacetylation of p300 in a highly conserved and intrinsically disordered autoinhibitory lysine-rich loop, resulting in p300 activation. We describe a crystal structure of p300 in which the autoinhibitory loop invades the active site of a neighbouring HAT domain, revealing a snapshot of a trans-autoacetylation reaction intermediate. Substrate access to the active site involves the rearrangement of an autoinhibitory RING domain. Our data explain how cellular signalling and the activation and dimerization of transcription factors control the activation of p300, and therefore explain why gene transcription is associated with chromatin acetylation.


    Organizational Affiliation

    Max Planck Institute for Biophysical Chemistry, Department of Molecular Biology, Göttingen, Germany.,Leicester Institute of Structural and Chemical Biology, Department of Molecular and Cell Biology, University of Leicester, Leicester, UK.,European Molecular Biology Laboratory, Grenoble, France. daniel.panne@le.ac.uk.,European Molecular Biology Laboratory, Grenoble, France.,Leicester Institute of Structural and Chemical Biology, Department of Molecular and Cell Biology, University of Leicester, Leicester, UK. daniel.panne@le.ac.uk.,CNRS UMR 5309, INSERM U1209, Université Grenoble Alpes, Institute for Advanced Biosciences, Grenoble, France.,Department of Biomedical Engineering and Center for Biological Systems Engineering, Washington University in St. Louis, St. Louis, MO, USA.,Université Grenoble Alpes, INSERM U1042, HP2 Laboratory, Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone acetyltransferase p300
A
161Homo sapiensMutation(s): 0 
Gene Names: EP300 (P300)
EC: 2.3.1.48
Find proteins for Q09472 (Homo sapiens)
Go to Gene View: EP300
Go to UniProtKB:  Q09472
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone acetyltransferase p300
B
168Homo sapiensMutation(s): 0 
Gene Names: EP300 (P300)
EC: 2.3.1.48
Find proteins for Q09472 (Homo sapiens)
Go to Gene View: EP300
Go to UniProtKB:  Q09472
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H4
C
9Xenopus laevisMutation(s): 0 
Find proteins for P62799 (Xenopus laevis)
Go to UniProtKB:  P62799
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY
C
L-PEPTIDE LINKINGC8 H16 N2 O3LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.288 
  • R-Value Work: 0.261 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.640α = 90.00
b = 83.710β = 90.00
c = 165.620γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2018-07-01 
  • Released Date: 2018-10-17 
  • Deposition Author(s): Panne, D., Ortega, E.

Revision History 

  • Version 1.0: 2018-10-17
    Type: Initial release
  • Version 1.1: 2018-10-24
    Type: Data collection, Database references
  • Version 1.2: 2018-11-14
    Type: Data collection, Database references