2NZD

Nucleosome core particle containing 145 bp of DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

DNA stretching and extreme kinking in the nucleosome core

Ong, M.S.Richmond, T.J.Davey, C.A.

(2007) J.Mol.Biol. 368: 1067-1074

  • DOI: 10.1016/j.jmb.2007.02.062

  • PubMed Abstract: 
  • DNA stretching in chromatin may facilitate its compaction and influence site recognition by nuclear factors. In vivo, stretching has been estimated to occur at the equivalent of one to two base-pairs (bp) per nucleosome. We have determined the crysta ...

    DNA stretching in chromatin may facilitate its compaction and influence site recognition by nuclear factors. In vivo, stretching has been estimated to occur at the equivalent of one to two base-pairs (bp) per nucleosome. We have determined the crystal structure of a nucleosome core particle containing 145 bp of DNA (NCP145). Compared to the structure with 147 bp, the NCP145 displays two incidences of stretching one to two double-helical turns from the particle dyad axis. The stretching illustrates clearly a mechanism for shifting DNA position by displacement of a single base-pair while maintaining nearly identical histone-DNA interactions. Increased DNA twist localized to a short section between adjacent histone-DNA binding sites advances the rotational setting, while a translational component involves DNA kinking at a flanking region that initiates elongation by unstacking bases. Furthermore, one stretched region of the NCP145 displays an extraordinary 55 degrees kink into the minor groove situated 1.5 double-helical turns from the particle dyad axis, a hot spot for gene insertion by HIV-integrase, which prefers highly distorted substrate. This suggests that nucleosome position and context within chromatin could promote extreme DNA kinking that may influence genomic processes.


    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: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H3
A, E
135Xenopus laevisMutation(s): 0 
Find proteins for P84233 (Xenopus laevis)
Go to UniProtKB:  P84233
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone H4
B, F
102Xenopus laevisMutation(s): 0 
Find proteins for P62799 (Xenopus laevis)
Go to UniProtKB:  P62799
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetails
histone H2A
C, G
119Xenopus laevisMutation(s): 0 
Find proteins for P06897 (Xenopus laevis)
Go to UniProtKB:  P06897
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetails
Histone H2B
D, H
125Xenopus laevisMutation(s): 0 
Find proteins for P02281 (Xenopus laevis)
Go to UniProtKB:  P02281
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (145-MER)I145N/A
Entity ID: 2
MoleculeChainsLengthOrganism
DNA (145-MER)J145N/A
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MN
Query on MN

Download SDF File 
Download CCD File 
E, I, J
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.233 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 105.617α = 90.00
b = 109.856β = 90.00
c = 181.217γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
SCALAdata scaling
CCP4data scaling
CNSphasing
CrystalCleardata collection
MOSFLMdata reduction
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-10
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance