8GRQ | pdb_00008grq

Cryo-EM structure of BRCA1/BARD1 bound to H2AK127-UbcH5c-Ub nucleosome

• PDB DOI: https://doi.org/10.2210/pdb8GRQ/pdb
• NAKB: 8GRQ
• EM Map EMD-34212: EMDB EMDataResource

• Classification: NUCLEAR PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2022-09-02 Released: 2023-04-12 
• Deposition Author(s): Ai, H.S., Zebin, T., Zhiheng, D., Jiakun, T., Liying, Z., Jia-Bin, L., Man, P., Liu, L.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.87 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Synthetic E2-Ub-nucleosome conjugates for studying nucleosome ubiquitination.

Ai, H.S., Tong, Z., Deng, Z., Tian, J., Zhang, L., Sun, M., Du, Y., Xu, Z., Shi, Q., Liang, L., Zheng, Q., Li, J.B., Pan, M., Liu, L.

(2023) Chem 

• DOI: https://doi.org/10.1016/j.chempr.2023.01.012

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 11-mer - A2B2C2D2E1F1G1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 11-mer - A5B3C2D1 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: 235.96 kDa 
• Atom Count: 14,563 
• Modeled Residue Count: 1,378 
• Deposited Residue Count: 1,577 
• Unique protein chains: 7
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H3	A, E	98	Homo sapiens	Mutation(s): 0  Gene Names: CALMAC_LOCUS17614
UniProt & NIH Common Fund Data Resources
Find proteins for Q71DI3 (Homo sapiens) Explore Q71DI3  Go to UniProtKB:  Q71DI3
PHAROS:  Q71DI3 GTEx:  ENSG00000183598 ENSG00000203811 ENSG00000203852

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H4	B, F	80	Homo sapiens	Mutation(s): 0  Gene Names: Dana\GF27365, Dana_GF27365, GF27365
UniProt & NIH Common Fund Data Resources
Find proteins for P62805 (Homo sapiens) Explore P62805  Go to UniProtKB:  P62805
PHAROS:  P62805 GTEx:  ENSG00000274618 ENSG00000197238 ENSG00000197837 ENSG00000158406 ENSG00000278705 ENSG00000197061 ENSG00000270882 ENSG00000270276 ENSG00000273542 ENSG00000277157 ENSG00000276966 ENSG00000276180 ENSG00000278637 ENSG00000275126

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Histone H2A type 1-H	C, G	110	Homo sapiens	Mutation(s): 0  Gene Names: H2ac12, Hist1h2ah
UniProt & NIH Common Fund Data Resources
Find proteins for P04908 (Homo sapiens) Explore P04908  Go to UniProtKB:  P04908
PHAROS:  P04908 GTEx:  ENSG00000277075 ENSG00000278463

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
H2B	D, H	188	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for O60814 (Homo sapiens) Explore O60814  Go to UniProtKB:  O60814
PHAROS:  O60814 GTEx:  ENSG00000197903

Entity ID: 7
Molecule	Chains	Sequence Length	Organism	Details	Image
Breast cancer type 1 susceptibility protein	K	92	Homo sapiens	Mutation(s): 0  Gene Names: BRCA1, RNF53 EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for P38398 (Homo sapiens) Explore P38398  Go to UniProtKB:  P38398
PHAROS:  P38398 GTEx:  ENSG00000012048

Entity ID: 8
Molecule	Chains	Sequence Length	Organism	Details	Image
BRCA1-associated RING domain protein 1	L [auth M]	92	Homo sapiens	Mutation(s): 0  Gene Names: BARD1 EC: 2.3.2.27
UniProt & NIH Common Fund Data Resources
Find proteins for Q99728 (Homo sapiens) Explore Q99728  Go to UniProtKB:  Q99728
PHAROS:  Q99728 GTEx:  ENSG00000138376

Entity ID: 9
Molecule	Chains	Sequence Length	Organism	Details	Image
Ubiquitin-conjugating enzyme E2D 3 (UBC4/5 homolog, yeast), isoform CRA_a	M [auth N]	147	Homo sapiens	Mutation(s): 0  Gene Names: UBE2D3, hCG_2028213 EC: 2.3.2.24 (UniProt), 2.3.2.23 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P61077 (Homo sapiens) Explore P61077  Go to UniProtKB:  P61077
PHAROS:  P61077 GTEx:  ENSG00000109332

Entity ID: 5
Molecule	Chains	Length	Organism	Image
DNA (147-MER)	I	147	Homo sapiens

Entity ID: 6
Molecule	Chains	Length	Organism	Image
DNA (147-MER)	J	147	Homo sapiens

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.87 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2023-04-12 
Deposition Author(s): Ai, H.S., Zebin, T., Zhiheng, D., Jiakun, T., Liying, Z., Jia-Bin, L., Man, P., Liu, L.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	22137005, 81621002 and 21977090

Revision History  

• Version 1.0: 2023-04-12
  Type: Initial release
  
• Version 1.1: 2024-07-03
  Changes: Data collection
• Version 1.2: 2025-06-25
  Changes: Data collection, Structure summary