2AYU

The structure of nucleosome assembly protein suggests a mechanism for histone binding and shuttling


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.250 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The structure of nucleosome assembly protein 1.

Park, Y.J.Luger, K.

(2006) Proc.Natl.Acad.Sci.Usa 103: 1248-1253

  • DOI: 10.1073/pnas.0508002103

  • PubMed Abstract: 
  • Nucleosome assembly protein 1 (NAP-1) is an integral component in the establishment, maintenance, and dynamics of eukaryotic chromatin. It shuttles histones into the nucleus, assembles nucleosomes, and promotes chromatin fluidity, thereby affecting t ...

    Nucleosome assembly protein 1 (NAP-1) is an integral component in the establishment, maintenance, and dynamics of eukaryotic chromatin. It shuttles histones into the nucleus, assembles nucleosomes, and promotes chromatin fluidity, thereby affecting the transcription of many genes. The 3.0 A crystal structure of yeast NAP-1 reveals a previously uncharacterized fold with implications for histone binding and shuttling. A long alpha-helix is responsible for homodimerization via a previously uncharacterized antiparallel non-coiled-coil, and an alpha/beta domain is implicated in protein-protein interaction. A nuclear export sequence that is embedded in the dimerization helix is almost completely masked by an accessory domain that contains several target sites for casein kinase II. The four-stranded antiparallel beta-sheet that characterizes the alpha/beta domain is found in all histone chaperones, despite the absence of homology in sequence, structural context, or quaternary structure. To our knowledge, this is the first structure of a member of the large NAP family of proteins and suggests a mechanism by which the shuttling of histones to and from the nucleus is regulated.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523-1870, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Nucleosome assembly protein
A
417Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: NAP1
Find proteins for P25293 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P25293
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.250 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 86.700α = 90.00
b = 86.700β = 90.00
c = 176.100γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2005-09-08 
  • Released Date: 2006-02-07 
  • Deposition Author(s): Park, Y.J., Luger, K.

Revision History 

  • Version 1.0: 2006-02-07
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance