3AAD

Structure of the histone chaperone CIA/ASF1-double bromodomain complex linking histone modifications and site-specific histone eviction


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.237 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of the histone chaperone CIA/ASF1-double bromodomain complex linking histone modifications and site-specific histone eviction

Akai, Y.Adachi, N.Hayashi, Y.Eitoku, M.Sano, N.Natsume, R.Kudo, N.Tanokura, M.Senda, T.Horikoshi, M.

(2010) Proc.Natl.Acad.Sci.USA 107: 8153-8158

  • DOI: 10.1073/pnas.0912509107

  • PubMed Abstract: 
  • Nucleosomes around the promoter region are disassembled for transcription in response to various signals, such as acetylation and methylation of histones. Although the interactions between histone-acetylation-recognizing bromodomains and factors invo ...

    Nucleosomes around the promoter region are disassembled for transcription in response to various signals, such as acetylation and methylation of histones. Although the interactions between histone-acetylation-recognizing bromodomains and factors involved in nucleosome disassembly have been reported, no structural basis connecting histone modifications and nucleosome disassembly has been obtained. Here, we determined at 3.3 A resolution the crystal structure of histone chaperone cell cycle gene 1 (CCG1) interacting factor A/antisilencing function 1 (CIA/ASF1) in complex with the double bromodomain in the CCG1/TAF1/TAF(II)250 subunit of transcription factor IID. Structural, biochemical, and biological studies suggested that interaction between double bromodomain and CIA/ASF1 is required for their colocalization, histone eviction, and pol II entry at active promoter regions. Furthermore, the present crystal structure has characteristics that can connect histone acetylation and CIA/ASF1-mediated histone eviction. These findings suggest that the molecular complex between CIA/ASF1 and the double bromodomain plays a key role in site-specific histone eviction at active promoter regions. The model we propose here is the initial structure-based model of the biological signaling from histone modifications to structural change of the nucleosome (hi-MOST model).


    Organizational Affiliation

    Biomedicinal Information Research Center, National Institute of Advanced Industrial Science and Technology, 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription initiation factor TFIID subunit 1
A
292Homo sapiensMutation(s): 0 
Gene Names: TAF1 (BA2R, CCG1, CCGS, TAF2A)
EC: 2.3.1.48, 2.7.11.1
Find proteins for P21675 (Homo sapiens)
Go to Gene View: TAF1
Go to UniProtKB:  P21675
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone chaperone ASF1A
B, D
158Homo sapiensMutation(s): 0 
Gene Names: ASF1A
Find proteins for Q9Y294 (Homo sapiens)
Go to Gene View: ASF1A
Go to UniProtKB:  Q9Y294
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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.3 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.237 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.120α = 90.00
b = 102.120β = 90.00
c = 271.920γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
REFMACrefinement
PHASERphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-04-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2014-01-29
    Type: Database references
  • Version 1.3: 2017-10-11
    Type: Refinement description