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: 3.30 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.240 

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 U S A 107: 8153-8158

  • DOI: 10.1073/pnas.0912509107
  • Primary Citation of Related Structures:  
    3AAD

  • 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 involved in nucleosome disassembly have been reported, no structural basis connecting histone modifications and nucleosome disassembly has been obtained ...

    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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription initiation factor TFIID subunit 1A292Homo sapiensMutation(s): 0 
Gene Names: CCG1TAF1TAFII250BA2RCCGSTAF2A
EC: 2.7.11.1 (PDB Primary Data), 2.3.1.48 (UniProt)
Find proteins for P21675 (Homo sapiens)
Explore P21675 
Go to UniProtKB:  P21675
NIH Common Fund Data Resources
PHAROS:  P21675
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Histone chaperone ASF1AB, C [auth D]158Homo sapiensMutation(s): 0 
Gene Names: ASF1ACIA-ICGI-98HSPC146
Find proteins for Q9Y294 (Homo sapiens)
Explore Q9Y294 
Go to UniProtKB:  Q9Y294
NIH Common Fund Data Resources
PHAROS:  Q9Y294
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.237 
  • R-Value Observed: 0.240 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.12α = 90
b = 102.12β = 90
c = 271.92γ = 120
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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