12OF | pdb_000012of

Cryo-EM structure of Arabidopsis VIM1 in complex with hemi-methylated CG-containing nucleosome 1

• PDB DOI: https://doi.org/10.2210/pdb12OF/pdb
• EM Map EMD-76627: EMDB EMDataResource

• Classification: Structural protein/DNA
• Organism(s): Arabidopsis thaliana, Xenopus laevis, Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2026-04-13 Released: 2026-10-07 
• Deposition Author(s): Chen, X., Song, J.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of Arabidopsis thaliana VIM1 in complex with hemi-methylated CG nucleosome-1

Chen, X., Song, J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 9-mer - A2B2C2D2E1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 9-mer - A7B1C1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Hetero 8-mer - A2B2C2D2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Hetero 8-mer - A2B2C2D2 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 292.7 kDa 
• Atom Count: 15,993 
• Modeled Residue Count: 1,505 
• Deposited Residue Count: 1,878 
• Unique protein chains: 5
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
E3 ubiquitin-protein ligase ORTHRUS 2	A	472	Arabidopsis thaliana	Mutation(s): 0  Gene Names: ORTH2, VIM1, At1g57820, F12K22.14 EC: 2.3.2.27
UniProt
Find proteins for Q8VYZ0 (Arabidopsis thaliana) Explore Q8VYZ0  Go to UniProtKB:  Q8VYZ0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2A	B, C	130	Xenopus laevis	Mutation(s): 0  Gene Names: hist1h2aj, LOC494591, XELAEV_18003602mg
UniProt
Find proteins for Q6AZJ8 (Xenopus laevis) Explore Q6AZJ8  Go to UniProtKB:  Q6AZJ8

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2B 1.1	D, E	123	Xenopus laevis	Mutation(s): 1
UniProt
Find proteins for P02281 (Xenopus laevis) Explore P02281  Go to UniProtKB:  P02281

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H3.2	F, G	136	Xenopus laevis	Mutation(s): 1
UniProt
Find proteins for P84233 (Xenopus laevis) Explore P84233  Go to UniProtKB:  P84233

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H4	H, I	103	Xenopus laevis	Mutation(s): 0
UniProt
Find proteins for P62798 (Xenopus borealis) Explore P62798  Go to UniProtKB:  P62798

Entity ID: 6
Molecule	Chains	Length	Organism	Image
DNA	J [auth L]	211	Homo sapiens

Entity ID: 7
Molecule	Chains	Length	Organism	Image
DNA	K [auth M]	211	Homo sapiens

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	L [auth A], M [auth A], N [auth A], O [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-10-07 
Deposition Author(s): Chen, X., Song, J.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	R35GM119721

Revision History  

• Version 1.0: 2026-10-07
  Type: Initial release