9M77 | pdb_00009m77

The activated state of human UHRF1 bound to a mononucleosome, with the finger loop ordered and linker 4 disordered.

• PDB DOI: https://doi.org/10.2210/pdb9M77/pdb
• NAKB: 9M77
• EM Map EMD-63677: EMDB EMDataResource

• Classification: DNA BINDING PROTEIN
• Organism(s): Xenopus laevis, Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2025-03-09 Released: 2026-03-11 
• Deposition Author(s): Naschberger, A., Baradaran, R., Sayed, A., Fischle, W.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

The cryo-EM structure of human UHRF1 bound to mononucleosomes.

Naschberger, A., Baradaran, R., Sayed, A., Fischle, W.

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 - A6B2C1 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.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 288.86 kDa 
• Atom Count: 15,849 
• Modeled Residue Count: 1,537 
• Deposited Residue Count: 2,071 
• Unique protein chains: 5
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H4	A [auth B], E [auth F]	103	Xenopus laevis	Mutation(s): 0
UniProt
Find proteins for P62799 (Xenopus laevis) Explore P62799  Go to UniProtKB:  P62799

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2A	B [auth C], F [auth G]	130	Xenopus laevis	Mutation(s): 0  Gene Names: h2ac14.L, h2ac14, 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	C [auth D], G [auth H]	126	Xenopus laevis	Mutation(s): 0
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	D [auth E], J [auth A]	136	Xenopus laevis	Mutation(s): 0  Gene Names: LOC121398065, LOC108703785, LOC121398067
UniProt
Find proteins for A0A310TTQ1 (Xenopus laevis) Explore A0A310TTQ1  Go to UniProtKB:  A0A310TTQ1

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
E3 ubiquitin-protein ligase UHRF1	K	793	Homo sapiens	Mutation(s): 0  Gene Names: UHRF1, ICBP90, NP95, RNF106 EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for Q96T88 (Homo sapiens) Explore Q96T88  Go to UniProtKB:  Q96T88
PHAROS:  Q96T88 GTEx:  ENSG00000276043

Entity ID: 5
Molecule	Chains	Length	Organism	Image
DNA (144-MER)	H [auth I]	144	Homo sapiens

Entity ID: 6
Molecule	Chains	Length	Organism	Image
Widom 601 (non-hemimethylated strand)	I [auth J]	144	Homo sapiens

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN (Subject of Investigation/LOI)	L [auth K], M [auth K], N [auth K]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21_5207

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-03-11 
Deposition Author(s): Naschberger, A., Baradaran, R., Sayed, A., Fischle, W.

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Funding Organization	Location	Grant Number
Other government	Saudi Arabia	--

Revision History  

• Version 1.0: 2026-03-11
  Type: Initial release