2P6V

Structure of TAFH domain of the human TAF4 subunit of TFIID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.214 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Conserved region I of human coactivator TAF4 binds to a short hydrophobic motif present in transcriptional regulators.

Wang, X.Truckses, D.M.Takada, S.Matsumura, T.Tanese, N.Jacobson, R.H.

(2007) Proc.Natl.Acad.Sci.Usa 104: 7839-7844

  • DOI: 10.1073/pnas.0608570104

  • PubMed Abstract: 
  • TBP-associated factor 4 (TAF4), an essential subunit of the TFIID complex acts as a coactivator for multiple transcriptional regulators, including Sp1 and CREB. However, little is known regarding the structural properties of the TAF4 subunit that lea ...

    TBP-associated factor 4 (TAF4), an essential subunit of the TFIID complex acts as a coactivator for multiple transcriptional regulators, including Sp1 and CREB. However, little is known regarding the structural properties of the TAF4 subunit that lead to the coactivator function. Here, we report the crystal structure at 2.0-A resolution of the human TAF4-TAFH domain, a conserved domain among all metazoan TAF4, TAF4b, and ETO family members. The hTAF4-TAFH structure adopts a completely helical fold with a large hydrophobic groove that forms a binding surface for TAF4 interacting factors. Using peptide phage display, we have characterized the binding preference of the hTAF4-TAFH domain for a hydrophobic motif, DPsiPsizetazetaPsiPhi, that is present in a number of nuclear factors, including several important transcriptional regulators with roles in activating, repressing, and modulating posttranslational modifications. A comparison of the hTAF4-TAFH structure with the homologous ETO-TAFH domain reveals several critical residues important for hTAF4-TAFH target specificity and suggests that TAF4 has evolved in response to the increased transcriptional complexity of metazoans.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Graduate School in Biomedical Sciences Program in Genes and Development, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor TFIID subunit 4
A
114Homo sapiensMutation(s): 0 
Gene Names: TAF4 (TAF2C, TAF2C1, TAF4A, TAFII130, TAFII135)
Find proteins for O00268 (Homo sapiens)
Go to Gene View: TAF4
Go to UniProtKB:  O00268
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MLY
Query on MLY
A
L-PEPTIDE LINKINGC8 H18 N2 O2LYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.214 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 74.852α = 90.00
b = 74.852β = 90.00
c = 131.785γ = 120.00
Software Package:
Software NamePurpose
MLPHAREphasing
MOSFLMdata reduction
REFMACrefinement
CCP4data scaling
ADSCdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-05-15
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance