3T92

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 

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
  • Structures With Same Primary Citation

  • 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.



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: EP300P300
EC: 2.3.1.48 (PDB Primary Data), 2.3.1 (UniProt)
Find proteins for Q15744 (Homo sapiens)
Go to UniProtKB:  Q15744
NIH Common Fund Data Resources
PHAROS  Q15744
Find proteins for Q09472 (Homo sapiens)
Go to UniProtKB:  Q09472
NIH Common Fund Data Resources
PHAROS  Q09472
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TCE
Query on TCE

Download CCD File 
A
3,3',3''-phosphanetriyltripropanoic acid
C9 H15 O6 P
PZBFGYYEXUXCOF-UHFFFAOYSA-N
 Ligand Interaction
TAM
Query on TAM

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

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

Download CCD File 
A
ACETONE
C3 H6 O
CSCPPACGZOOCGX-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.180 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 47.86α = 90
b = 47.86β = 90
c = 104.13γ = 120
Software Package:
Software NamePurpose
MAR345dtbdata collection
MrBUMPphasing
REFMACrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report



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
    Changes: Database references
  • Version 1.2: 2017-08-09
    Changes: Refinement description, Source and taxonomy
  • Version 1.3: 2018-10-10
    Changes: Data collection, Database references, Structure summary