1BH8

HTAFII18/HTAFII28 HETERODIMER CRYSTAL STRUCTURE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Human TAF(II)28 and TAF(II)18 interact through a histone fold encoded by atypical evolutionary conserved motifs also found in the SPT3 family.

Birck, C.Poch, O.Romier, C.Ruff, M.Mengus, G.Lavigne, A.C.Davidson, I.Moras, D.

(1998) Cell 94: 239-249

  • Primary Citation of Related Structures:  1BH9

  • PubMed Abstract: 
  • Determination of the crystal structure of the human TBP-associated factor (hTAF(II))28/hTAF(II)18 heterodimer shows that these TAF(II)s form a novel histone-like pair in the TFIID complex. The histone folds in hTAF(II)28 and hTAF(II)18 were not predi ...

    Determination of the crystal structure of the human TBP-associated factor (hTAF(II))28/hTAF(II)18 heterodimer shows that these TAF(II)s form a novel histone-like pair in the TFIID complex. The histone folds in hTAF(II)28 and hTAF(II)18 were not predicted from their primary sequence, indicating that these TAF(II)s define a novel family of atypical histone fold sequences. The TAF(II)18 and TAF(II)28 histone fold motifs are also present in the N- and C-terminal regions of the SPT3 proteins, suggesting that the histone fold in SPT3 may be reconstituted by intramolecular rather than classical intermolecular interactions. The existence of additional histone-like pairs in both the TFIID and SAGA complexes shows that the histone fold is a more commonly used motif for mediating TAF-TAF interactions than previously believed.


    Organizational Affiliation

    Institut de Génétique et de Biologie, Moléculaire et Cellulaire, CNRS/INSERM/ULP, Illkirch, C.U. de Strasbourg, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TAFII18
A
45Homo sapiensGene Names: TAF13 (TAF2K, TAFII18)
Find proteins for Q15543 (Homo sapiens)
Go to Gene View: TAF13
Go to UniProtKB:  Q15543
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
TAFII28
B
89Homo sapiensGene Names: TAF11 (TAF2I)
Find proteins for Q15544 (Homo sapiens)
Go to Gene View: TAF11
Go to UniProtKB:  Q15544
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 45.400α = 90.00
b = 48.400β = 90.00
c = 77.600γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
CNSrefinement
SHARPphasing
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-06-22
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance