1EQF

CRYSTAL STRUCTURE OF THE DOUBLE BROMODOMAIN MODULE FROM HUMAN TAFII250

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structure and function of a human TAFII250 double bromodomain module.

Jacobson, R.H., Ladurner, A.G., King, D.S., Tjian, R.

(2000) Science 288: 1422-1425

  • DOI: 10.1126/science.288.5470.1422
  • Primary Citation of Related Structures:  
    1EQF

  • PubMed Abstract: 

    • TFIID is a large multiprotein complex that initiates assembly of the transcription machinery. It is unclear how TFIID recognizes promoters in vivo when templates are nucleosome-bound. Here, it is shown that TAFII250, the largest subunit of TFIID, contains two tandem bromodomain modules that bind selectively to multiply acetylated histone H4 peptides ...

    TFIID is a large multiprotein complex that initiates assembly of the transcription machinery. It is unclear how TFIID recognizes promoters in vivo when templates are nucleosome-bound. Here, it is shown that TAFII250, the largest subunit of TFIID, contains two tandem bromodomain modules that bind selectively to multiply acetylated histone H4 peptides. The 2.1 angstrom crystal structure of the double bromodomain reveals two side-by-side, four-helix bundles with a highly polarized surface charge distribution. Each bundle contains an Nepsilon-acetyllysine binding pocket at its center, which results in a structure ideally suited for recognition of diacetylated histone H4 tails. Thus, TFIID may be targeted to specific chromatin-bound promoters and may play a role in chromatin recognition.

    Organizational Affiliation: 

    Howard Hughes Medical Institute and Department of Molecular and Cell Biology, 401 Barker Hall, University of California, Berkeley, CA 94720-3204, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
RNA POLYMERASE II TRANSCRIPTION INITIATION FACTOR A280Homo sapiensMutation(s): 0 
Gene Names: TAF1, BA2R, CCG1, CCGS, TAF2A
EC: 2.3.1.48 (UniProt), 2.7.11.1 (UniProt)
Find proteins for P21675 (Homo sapiens)
Explore P21675 
Go to UniProtKB:  P21675
NIH Common Fund Data Resources
PHAROS:  P21675
GTEx:  ENSG00000147133
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.218 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.1α = 90
b = 58.1β = 90
c = 101.5γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
MLPHAREphasing
CNSrefinement
CCP4data scaling

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-06-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance