3P57

Crystal structure of the p300 TAZ2 domain bound to MEF2 on DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1921 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of p300 bound to MEF2 on DNA reveals a mechanism of enhanceosome assembly.

He, J.Ye, J.Cai, Y.Riquelme, C.Liu, J.O.Liu, X.Han, A.Chen, L.

(2011) Nucleic Acids Res. 39: 4464-4474

  • DOI: 10.1093/nar/gkr030

  • PubMed Abstract: 
  • Transcription co-activators CBP and p300 are recruited by sequence-specific transcription factors to specific genomic loci to control gene expression. A highly conserved domain in CBP/p300, the TAZ2 domain, mediates direct interaction with a variety ...

    Transcription co-activators CBP and p300 are recruited by sequence-specific transcription factors to specific genomic loci to control gene expression. A highly conserved domain in CBP/p300, the TAZ2 domain, mediates direct interaction with a variety of transcription factors including the myocyte enhancer factor 2 (MEF2). Here we report the crystal structure of a ternary complex of the p300 TAZ2 domain bound to MEF2 on DNA at 2.2Å resolution. The structure reveals three MEF2:DNA complexes binding to different sites of the TAZ2 domain. Using structure-guided mutations and a mammalian two-hybrid assay, we show that all three interfaces contribute to the binding of MEF2 to p300, suggesting that p300 may use one of the three interfaces to interact with MEF2 in different cellular contexts and that one p300 can bind three MEF2:DNA complexes simultaneously. These studies, together with previously characterized TAZ2 complexes bound to different transcription factors, demonstrate the potency and versatility of TAZ2 in protein-protein interactions. Our results also support a model wherein p300 promotes the assembly of a higher-order enhanceosome by simultaneous interactions with multiple DNA-bound transcription factors.


    Organizational Affiliation

    MOE Key Laboratory for Cell Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian 361005, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myocyte-specific enhancer factor 2A
A, B, C, D, I, J
90Homo sapiensMutation(s): 0 
Gene Names: MEF2A (MEF2)
Find proteins for Q02078 (Homo sapiens)
Go to Gene View: MEF2A
Go to UniProtKB:  Q02078
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone acetyltransferase p300
P
112Homo 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
MoleculeChainsLengthOrganism
DNA (5'-D(*A*AP*AP*CP*TP*AP*TP*TP*TP*AP*TP*AP*AP*GP*A)-3')E,G,K15N/A
Entity ID: 3
MoleculeChainsLengthOrganism
DNA (5'-D(*TP*TP*CP*TP*TP*AP*TP*AP*AP*AP*TP*AP*GP*TP*T)-3')F,H,L15N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
P
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1921 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.219 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 74.846α = 90.00
b = 90.926β = 90.00
c = 144.802γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
DENZOdata reduction
SCALEPACKdata scaling
ADSCdata collection
CNSrefinement
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-08-10
    Type: Initial release
  • Version 1.1: 2017-11-08
    Type: Refinement description