1WG3

Structural analysis of yeast nucleosome-assembly factor CIA1p


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural Similarity between Histone Chaperone Cia1p/Asf1p and DNA-Binding Protein NF-{kappa}B

Padmanabhan, B.Kataoka, K.Umehara, T.Adachi, N.Yokoyama, S.Horikoshi, M.

(2005) J.Biochem.(Tokyo) 138: 821-829

  • DOI: 10.1093/jb/mvi182

  • PubMed Abstract: 
  • The structural relationships between histone-binding proteins and DNA-binding proteins are important, since nucleosome-interacting factors possess histone-binding and/or DNA-binding components. S. cerevisiae (Sc) Cia1p/Asf1p, a homologue of human CIA ...

    The structural relationships between histone-binding proteins and DNA-binding proteins are important, since nucleosome-interacting factors possess histone-binding and/or DNA-binding components. S. cerevisiae (Sc) Cia1p/Asf1p, a homologue of human CIA (CCG1-interacting factor A), is the most evolutionarily conserved histone chaperone, which facilitates nucleosome assembly by interacting with the nucleosome entry site of the core histones H3/H4. The crystal structure of the evolutionarily conserved domain (residues 1-169) of Cia1p (ScCia1p-DeltaC2) was determined at 2.95 A resolution. The refined model contains 166 residues in the asymmetric unit. The overall tertiary structure resembles a beta-sandwich fold, and belongs to the "switched" immunoglobulin class of proteins. The crystal structure suggests that ScCia1p-DeltaC2 is structurally related to the DNA-binding proteins, such as NF-kappaB and its family members. This is the first examination of the structural similarities between a histone chaperone and DNA-binding proteins. We discuss the possibilities that the strands beta3 and beta4, which possess highly electronegative surface potentials, are the important regions for the interaction with core histones, and that the histone chaperone ScCia1p/Asf1p and the DNA-binding protein NF-kappaB may have evolved from the same prototypal protein class.


    Organizational Affiliation

    Horikoshi Gene Selector Project, Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Corporation (JST), 5-9-6 Tokodai, Tsukuba 300-2635.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Anti-silencing protein 1
A
175Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: ASF1 (CIA1)
Find proteins for P32447 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32447
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.198 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 106.629α = 90.00
b = 47.048β = 90.00
c = 40.686γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
DPSdata reduction
CNSrefinement
AMoREphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-14
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance