1H3O

Crystal Structure of the Human TAF4-TAF12 (TAFII135-TAFII20) Complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Crystal Structure of a Subcomplex of Human Transcription Factor TFIID Formed by TATA Binding Protein-Associated Factors Htaf4 (Htaf(II)135) and Htaf12 (Htaf(II)20).

Werten, S.Mitschler, A.Romier, C.Gangloff, Y.-G.Thuault, S.Davidson, I.Moras, D.

(2002) J Biol Chem 277: 45502

  • DOI: 10.1074/jbc.M206587200
  • Primary Citation of Related Structures:  
    1H3O

  • PubMed Abstract: 
  • The crystal structure is presented of a complex formed by the interacting domains from two subunits of the general transcription factor TFIID, the human TATA binding protein-associated factors hTAF4 (hTAF(II)135) and hTAF12 (hTAF(II)20). In agreement with predictions, hTAF12 forms a histone fold that is very similar to that of histone H2B, yet unexpected differences are observed between the structures of the hTAF12 interaction domain of hTAF4 and histone H2A ...

    The crystal structure is presented of a complex formed by the interacting domains from two subunits of the general transcription factor TFIID, the human TATA binding protein-associated factors hTAF4 (hTAF(II)135) and hTAF12 (hTAF(II)20). In agreement with predictions, hTAF12 forms a histone fold that is very similar to that of histone H2B, yet unexpected differences are observed between the structures of the hTAF12 interaction domain of hTAF4 and histone H2A. Most importantly, the hTAF4 fragment forms only the first two helices of a classical histone fold, which are followed by a 26-residue disordered region. This indicates that either full-length TAF4 contains an unusually long connecting loop between its second and third helix, and this helix is not required for stable interaction with TAF12, or that TAF4 represents a novel class of partial histone fold motifs. Structural models and structure-based sequence alignments support a role for TAF4b and hSTAF42/yADA1 as alternative partners for TAF12 and are consistent with the formation of nucleosome-like histone-fold octamers through interaction of TAF12 with a TAF6-TAF9 tetramer, yet argue against involvement of TAF12-containing histone-fold pairs in DNA binding.


    Related Citations: 
    • The Human TFIID Components Tafii135 and Tafii20 and the Yeast Saga Components Ada1 and Tafii68 Heterodimerize to Form Histone-Like Pairs
      Gangloff, Y.-G., Werten, S., Romier, C., Carre, L., Poch, O., Moras, D., Davidson, I.
      (2000) Mol Cell Biol 20: 340

    Organizational Affiliation

    Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université Louis Pasteur, Boîte Postale, B.P. 163 67404 Illkirch Cédex Communauté Urbaine de Strasbourg, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSCRIPTION INITIATION FACTOR TFIID 135 KDA SUBUNITA, C75Homo sapiensMutation(s): 0 
Gene Names: TAF4TAF2CTAF2C1TAF4ATAFII130TAFII135
Find proteins for O00268 (Homo sapiens)
Explore O00268 
Go to UniProtKB:  O00268
NIH Common Fund Data Resources
PHAROS:  O00268
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
TRANSCRIPTION INITIATION FACTOR TFIID 20/15 KDA SUBUNITSB, D76Homo sapiensMutation(s): 0 
Gene Names: TAF12TAF15TAF2JTAFII20
Find proteins for Q16514 (Homo sapiens)
Explore Q16514 
Go to UniProtKB:  Q16514
NIH Common Fund Data Resources
PHAROS:  Q16514
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, CL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 112.94α = 90
b = 36.825β = 97.85
c = 73.948γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-09-26
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-24
    Changes: Data collection, Derived calculations