Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 8-mer - A2B2C2D2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 8-mer - A7B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 202.45 kDa 
• Atom Count: 12,081 
• Modelled Residue Count: 1,059 
• Deposited Residue Count: 1,306 
• Unique protein chains: 4
• Unique nucleic acid chains: 1

 5B2I

Human nucleosome containing CpG unmethylated DNA

• PDB DOI: 10.2210/pdb5B2I/pdb
• NDB: 5B2I

• Classification: TRANSCRIPTION/DNA
• Organism(s): Homo sapiens
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG, Escherichia coli HB101
• Mutation(s): No 


• Deposited: 2016-01-16 Released: 2016-06-15 
• Deposition Author(s): Fujii, Y., Wakamori, M., Umehara, T., Yokoyama, S.
• Funding Organization(s): Japan Agency for Medical Research and development, Japan Science and Technology Agency, Ministry of Education, Culture, Sports, Science and Technology, Japan Society for the Promotion of Science London, Takeda Science Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.257 
• R-Value Work: 0.200 
• R-Value Observed: 0.203 

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

• PubMed: 27419055 
• DOI: 10.1002/2211-5463.12064
• Primary Citation of Related Structures:  
  5B2I, 5B2J


• 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 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.

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Organizational Affiliation: 

RIKEN Systems and Structural Biology Center Tsurumi Yokohama Japan; RIKEN Structural Biology Laboratory Tsurumi Yokohama Japan.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H3.1	A, E	139	Homo sapiens	Mutation(s): 0  Gene Names:  HIST1H3A, H3FA, HIST1H3B, H3FL, HIST1H3C, H3FC, HIST1H3D, H3FB, HIST1H3E, H3FD, HIST1H3F, H3FI, HIST1H3G, H3FH, HIST1H3H, H3FK, HIST1H3I, H3FF, HIST1H3J, H3FJ, H3C1, H3C2, H3C3, H3FC HIST1H3C, H3C4, H3C6, H3C7, H3C8, H3C10, H3C11, H3C12
UniProt & NIH Common Fund Data Resources
Find proteins for P68431 (Homo sapiens) Explore P68431  Go to UniProtKB:  P68431
PHAROS:  P68431

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H4	B, F	106	Homo sapiens	Mutation(s): 0  Gene Names:  HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, H4FE, HIST1H4K, H4/D, H4FD, HIST1H4L, H4/K, H4FK, HIST2H4A, H4/N, H4F2, H4FN, HIST2H4, HIST2H4B, H4/O, H4FO, HIST4H4, H4C1, H4C2, H4C3, H4C4, H4C5, H4C6, H4C8, H4C9, H4C11, H4C12, H4C13, H4C14, H4C15, H4-16
UniProt & NIH Common Fund Data Resources
Find proteins for P62805 (Homo sapiens) Explore P62805  Go to UniProtKB:  P62805
PHAROS:  P62805

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2A type 1-B/E	C, G	133	Homo sapiens	Mutation(s): 0  Gene Names: HIST1H2AB, H2AFM, HIST1H2AE, H2AFA, H2AC4, H2AC8
UniProt & NIH Common Fund Data Resources
Find proteins for P04908 (Homo sapiens) Explore P04908  Go to UniProtKB:  P04908
PHAROS:  P04908

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2B type 1-J	D, H	129	Homo sapiens	Mutation(s): 0  Gene Names: HIST1H2BJ, H2BFR, H2BC11
UniProt & NIH Common Fund Data Resources
Find proteins for P06899 (Homo sapiens) Explore P06899  Go to UniProtKB:  P06899
PHAROS:  P06899

Entity ID: 5
Molecule	Chains	Length	Organism	Image
DNA (146-MER)	I, J	146	Homo sapiens

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	K [auth E], L [auth I], M [auth J], N [auth J]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.257 
• R-Value Work: 0.200 
• R-Value Observed: 0.203 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 106.499	α = 90
b = 109.047	β = 90
c = 177.016	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2016-06-15 
Deposition Author(s): Fujii, Y., Wakamori, M., Umehara, T., Yokoyama, S.

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Funding Organization	Location	Grant Number
Japan Agency for Medical Research and development	Japan	the Platform Project for Supporting in Drug Discov
Japan Science and Technology Agency	Japan	PRESTO program
Ministry of Education, Culture, Sports, Science and Technology	Japan	Targeted Proteins Research Program (TPRP)
Japan Society for the Promotion of Science London	Japan	C24613007
Takeda Science Foundation	Japan	--

Revision History  

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