3P57

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.19 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.225 

wwPDB Validation   3D Report Full Report


This is version 1.2 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
  • Primary Citation of Related Structures:  
    3P57

  • 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 of transcription factors including the myocyte enhancer factor 2 (MEF2) ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Myocyte-specific enhancer factor 2AA, B, C, D, E [auth I], F [auth J]90Homo sapiensMutation(s): 0 
Gene Names: MEF2MEF2A
Find proteins for Q02078 (Homo sapiens)
Explore Q02078 
Go to UniProtKB:  Q02078
NIH Common Fund Data Resources
PHAROS:  Q02078
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Histone acetyltransferase p300M [auth P]112Homo sapiensMutation(s): 0 
Gene Names: EP300P300
EC: 2.3.1.48 (PDB Primary Data), 2.3.1 (UniProt)
Find proteins for Q09472 (Homo sapiens)
Explore Q09472 
Go to UniProtKB:  Q09472
NIH Common Fund Data Resources
PHAROS:  Q09472
Protein Feature View
Expand
  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 2
    MoleculeChainsLengthOrganismImage
    DNA (5'-D(*A*AP*AP*CP*TP*AP*TP*TP*TP*AP*TP*AP*AP*GP*A)-3')G [auth E], I [auth G], K15synthetic construct
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 3
      MoleculeChainsLengthOrganismImage
      DNA (5'-D(*TP*TP*CP*TP*TP*AP*TP*AP*AP*AP*TP*AP*GP*TP*T)-3')H [auth F], J [auth H], L15synthetic construct
      Small Molecules
      Ligands 1 Unique
      IDChainsName / Formula / InChI Key2D Diagram3D Interactions
      ZN
      Query on ZN

      Download Ideal Coordinates CCD File 
      N [auth P], O [auth P], PZINC ION
      Zn
      PTFCDOFLOPIGGS-UHFFFAOYSA-N
       Ligand Interaction
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.19 Å
      • R-Value Free: 0.272 
      • R-Value Work: 0.219 
      • R-Value Observed: 0.225 
      • Space Group: P 21 21 21
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 74.846α = 90
      b = 90.926β = 90
      c = 144.802γ = 90
      Software Package:
      Software NamePurpose
      PHENIXrefinement
      CNSrefinement
      PDB_EXTRACTdata extraction
      ADSCdata collection
      DENZOdata reduction
      SCALEPACKdata scaling

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2011-08-10
        Type: Initial release
      • Version 1.1: 2017-11-08
        Changes: Refinement description
      • Version 1.2: 2019-07-17
        Changes: Data collection, Refinement description, Source and taxonomy