3T92

Crystal structure of the Taz2:C/EBPepsilon-TAD chimera protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural insights into interactions of C/EBP transcriptional activators with the Taz2 domain of p300.

Bhaumik, P.Davis, J.Tropea, J.E.Cherry, S.Johnson, P.F.Miller, M.

(2014) Acta Crystallogr. D Biol. Crystallogr. 70: 1914-1921

  • DOI: 10.1107/S1399004714009262

  • PubMed Abstract: 
  • Members of the C/EBP family of transcription factors bind to the Taz2 domain of p300/CBP and mediate its phosphorylation through the recruitment of specific kinases. Short sequence motifs termed homology boxes A and B, which comprise their minimal tr ...

    Members of the C/EBP family of transcription factors bind to the Taz2 domain of p300/CBP and mediate its phosphorylation through the recruitment of specific kinases. Short sequence motifs termed homology boxes A and B, which comprise their minimal transactivation domains (TADs), are conserved between C/EBP activators and are necessary for specific p300/CBP binding. A possible mode of interaction between C/EBP TADs and the p300 Taz2 domain was implied by the crystal structure of a chimeric protein composed of residues 1723-1818 of p300 Taz2 and residues 37-61 of C/EBPℇ. The segment corresponding to the C/EBPℇ TAD forms two orthogonally disposed helices connected by a short linker and interacts with the core structure of Taz2 from a symmetry-related molecule. It is proposed that other members of the C/EBP family interact with the Taz2 domain in the same manner. The position of the C/EBPℇ peptide on the Taz2 protein interaction surface suggests that the N-termini of C/EBP proteins are unbound in the C/EBP-p300 Taz2 complex. This observation is in agreement with the known location of the docking site of protein kinase HIPK2 in the C/EBPβ N-terminus, which associates with the C/EBPβ-p300 complex.


    Organizational Affiliation

    Protein Structure Section, Macromolecular Crystallography Laboratory, National Cancer Institute at Frederick, Frederick, MD 21702, USA.,Protein Purification Core, Macromolecular Crystallography Laboratory, National Cancer Institute at Frederick, Frederick, MD 21702, USA.,Mouse Cancer Genetics Program, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, MD 21702, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HISTONE ACETYLTRANSFERASE P300 TAZ2-CCAAT/ENHANCER-BINDING PROTEIN EPSILON
A
121Homo sapiensMutation(s): 4 
Gene Names: CEBPE, EP300 (P300)
EC: 2.3.1.48
Find proteins for Q15744 (Homo sapiens)
Go to Gene View: CEBPE
Go to UniProtKB:  Q15744
Find proteins for Q09472 (Homo sapiens)
Go to Gene View: EP300
Go to UniProtKB:  Q09472
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
ACN
Query on ACN

Download SDF File 
Download CCD File 
A
ACETONE
C3 H6 O
CSCPPACGZOOCGX-UHFFFAOYSA-N
 Ligand Interaction
TAM
Query on TAM

Download SDF File 
Download CCD File 
A
TRIS(HYDROXYETHYL)AMINOMETHANE
C7 H17 N O3
GKODZWOPPOTFGA-UHFFFAOYSA-N
 Ligand Interaction
TCE
Query on TCE

Download SDF File 
Download CCD File 
A
3,3',3''-phosphanetriyltripropanoic acid
3-[bis(2-carboxyethyl)phosphanyl]propanoic acid
C9 H15 O6 P
PZBFGYYEXUXCOF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.178 
  • Space Group: P 65
Unit Cell:
Length (Å)Angle (°)
a = 47.860α = 90.00
b = 47.860β = 90.00
c = 104.130γ = 120.00
Software Package:
Software NamePurpose
MrBUMPphasing
MAR345dtbdata collection
XDSdata scaling
REFMACrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-08-02 
  • Released Date: 2012-08-08 
  • Deposition Author(s): Bhaumik, P., Maria, M.

Revision History 

  • Version 1.0: 2012-08-08
    Type: Initial release
  • Version 1.1: 2014-07-16
    Type: Database references
  • Version 1.2: 2017-08-09
    Type: Refinement description, Source and taxonomy
  • Version 1.3: 2018-10-10
    Type: Data collection, Database references, Structure summary