3UT9

Crystal Structure of Nucleosome Core Particle Assembled with a Palindromic Widom '601' Derivative (NCP-601L)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.257 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The mechanics behind DNA sequence-dependent properties of the nucleosome

Chua, E.Y.D.Vasudevan, D.Davey, G.E.Wu, B.Davey, C.A.

(2012) Nucleic Acids Res. 40: 6338-6352

  • DOI: 10.1093/nar/gks261
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Chromatin organization and composition impart sophisticated regulatory features critical to eukaryotic genomic function. Although DNA sequence-dependent histone octamer binding is important for nucleosome activity, many aspects of this phenomenon hav ...

    Chromatin organization and composition impart sophisticated regulatory features critical to eukaryotic genomic function. Although DNA sequence-dependent histone octamer binding is important for nucleosome activity, many aspects of this phenomenon have remained elusive. We studied nucleosome structure and stability with diverse DNA sequences, including Widom 601 derivatives with the highest known octamer affinities, to establish a simple model behind the mechanics of sequence dependency. This uncovers the unique but unexpected role of TA dinucleotides and a propensity for G|C-rich sequence elements to conform energetically favourably at most locations around the histone octamer, which rationalizes G|C% as the most predictive factor for nucleosome occupancy in vivo. In addition, our findings reveal dominant constraints on double helix conformation by H3-H4 relative to H2A-H2B binding and DNA sequence context-dependency underlying nucleosome structure, positioning and stability. This provides a basis for improved prediction of nucleosomal properties and the design of tailored DNA constructs for chromatin investigations.


    Organizational Affiliation

    Division of Structural and Computational Biology, School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551, Singapore.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone H3.2
A, E
135Xenopus laevisMutation(s): 0 
Find proteins for P84233 (Xenopus laevis)
Go to UniProtKB:  P84233
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H4
B, F
102Xenopus laevisMutation(s): 0 
Find proteins for P62799 (Xenopus laevis)
Go to UniProtKB:  P62799
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H2A
C, G
129Xenopus laevisMutation(s): 0 
Find proteins for P06897 (Xenopus laevis)
Go to UniProtKB:  P06897
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone H2B 1.1
D, H
125Xenopus laevisMutation(s): 0 
Find proteins for P02281 (Xenopus laevis)
Go to UniProtKB:  P02281
Entity ID: 5
MoleculeChainsLengthOrganism
145-mer DNAI145N/A
Entity ID: 6
MoleculeChainsLengthOrganism
145-mer DNAJ145N/A
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
I, J
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MN
Query on MN

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Download CCD File 
E, I, J
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download SDF File 
Download CCD File 
C, G
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.289 
  • R-Value Work: 0.257 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 106.494α = 90.00
b = 109.533β = 90.00
c = 174.822γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-04-11
    Type: Initial release
  • Version 1.1: 2013-06-26
    Type: Database references