5B2J

Human nucleosome containing CpG methylated DNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of human nucleosome core particle containing enzymatically introduced CpG methylation.

Fujii, Y.Wakamori, M.Umehara, T.Yokoyama, S.

(2016) Febs Open Bio 6: 498-514

  • DOI: 10.1002/2211-5463.12064
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cytosine methylation, predominantly of the CpG sequence in vertebrates, is one of the major epigenetic modifications crucially involved in the control of gene expression. Due to the difficulty of reconstituting site-specifically methylated nucleosoma ...

    Cytosine methylation, predominantly of the CpG sequence in vertebrates, is one of the major epigenetic modifications crucially involved in the control of gene expression. Due to the difficulty of reconstituting site-specifically methylated nucleosomal DNA at crystallization quality, most structural analyses of CpG methylation have been performed using chemically synthesized oligonucleotides, There has been just one recent study of nucleosome core particles (NCPs) reconstituted with nonpalindromic human satellite 2-derived DNAs. Through the preparation of a 146-bp palindromic α-satellite-based nucleosomal DNA containing four CpG dinucleotide sequences and its enzymatic methylation and restriction, we reconstituted a 'symmetric' human CpG-methylated nucleosome core particle (NCP). We solved the crystal structures of the CpG-methylated and unmodified NCPs at 2.6 and 3.0 Å resolution, respectively. We observed the electron densities of two methyl groups, among the eight 5-methylcytosines introduced in the CpG-fully methylated NCP. There were no obvious structural differences between the CpG-methylated 'symmetric NCP' and the unmodified NCP. The preparation of a crystallization-grade CpG-methylated NCP provides a platform for the analysis of CpG-methyl reader and eraser proteins.


    Organizational Affiliation

    RIKEN Systems and Structural Biology CenterTsurumi Yokohama Japan; RIKEN Center for Life Science Technologies Tsurumi Yokohama Japan; PRESTO, Japan Science and Technology Agency (JST) Kawaguchi Saitama Japan.,RIKEN Systems and Structural Biology Center Tsurumi Yokohama Japan; RIKEN Center for Life Science Technologies Tsurumi Yokohama Japan.,RIKEN Systems and Structural Biology Center Tsurumi Yokohama Japan; RIKEN Structural Biology Laboratory Tsurumi Yokohama Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Histone H3.1
A, E
139Homo sapiensMutation(s): 0 
Gene Names: H3C1, H3C2, H3C3, H3C4, H3C6, H3C7, H3C8, H3C10, H3C11, H3C12 (H3FA, HIST1H3A, H3FL, HIST1H3B, H3FC HIST1H3C, H3FB, HIST1H3D, H3FD, HIST1H3E, H3FI, HIST1H3F, H3FH, HIST1H3G, H3FK, HIST1H3H, H3FF, HIST1H3I, H3FJ, HIST1H3J)
Find proteins for P68431 (Homo sapiens)
Go to UniProtKB:  P68431
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone H4
B, F
106Homo sapiensMutation(s): 0 
Gene Names: H4C1, H4C2, H4C3, H4C4, H4C5, H4C6, H4C8, H4C9, H4C11, H4C12, H4C13, H4C14, H4C15, H4-16 (H4/A, H4FA, HIST1H4A, H4/I, H4FI, HIST1H4B, H4/G, H4FG, HIST1H4C, H4/B, H4FB, HIST1H4D, H4/J, H4FJ, HIST1H4E, H4/C, H4FC, HIST1H4F, H4/H, H4FH, HIST1H4H, H4/M, H4FM, HIST1H4I, H4/E, H4FE, HIST1H4J, H4/D, H4FD, HIST1H4K, H4/K, H4FK, HIST1H4L, H4/N, H4F2, H4FN, HIST2H4, HIST2H4A, H4/O, H4FO, HIST2H4B, HIST4H4)
Find proteins for P62805 (Homo sapiens)
Go to UniProtKB:  P62805
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Histone H2A type 1-B/E
C, G
133Homo sapiensMutation(s): 0 
Gene Names: H2AC4, H2AC8 (H2AFM, HIST1H2AB, H2AFA, HIST1H2AE)
Find proteins for P04908 (Homo sapiens)
Go to UniProtKB:  P04908
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Histone H2B type 1-J
D, H
129Homo sapiensMutation(s): 0 
Gene Names: H2BC11 (H2BFR, HIST1H2BJ)
Find proteins for P06899 (Homo sapiens)
Go to UniProtKB:  P06899
Entity ID: 5
MoleculeChainsLengthOrganism
DNA (146-MER)I,J146Homo sapiens
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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
5CM
Query on 5CM
I, J
DNA LINKINGC10 H16 N3 O7 PDC
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.252 
  • R-Value Work: 0.197 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 106.540α = 90.00
b = 109.670β = 90.00
c = 181.350γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
PHASERphasing
PHENIXrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-06-15
    Type: Initial release
  • Version 1.1: 2019-12-25
    Type: Data collection, Database references, Derived calculations