9UA3 | pdb_00009ua3

Cryo-EM structure of neddylated CUL2-RBX1-FEM1C-ELOB-ELOC

• PDB DOI: https://doi.org/10.2210/pdb9UA3/pdb
• EM Map EMD-63977: EMDB EMDataResource

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


• Deposited: 2025-03-31 Released: 2026-03-04 
• Deposition Author(s): Zhou, H., Xu, C.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.28 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structural insights into CRL2FEM1C ubiquitin ligase-mediated protein ubiquitination.

Zhou, H., Israel-Gueta, M., Chen, X., Guo, Q., Liu, X., Koren, I., Xu, C.

(2025) J Mol Cell Biol 17

• PubMed: 40388302 
• DOI: https://doi.org/10.1093/jmcb/mjaf016
• Primary Citation of Related Structures:  
  9UA3

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Organizational Affiliation: 
• MOE Key Laboratory for Membraneless Organelles & Cellular Dynamics, Center for Advanced Interdisciplinary Science and Biomedicine of IHM, Hefei National Laboratory for Physical Sciences at the Microscale, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China.
The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel.
Mechanism of DNA Repair, Replication, and Recombination Section, Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 10-mer - A2B2C2D2E2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 10-mer - A2B2C2D2E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 360.6 kDa 
• Atom Count: 17,924 
• Modeled Residue Count: 2,244 
• Deposited Residue Count: 3,160 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein fem-1 homolog C	A, C [auth E]	617	Homo sapiens	Mutation(s): 0  Gene Names: FEM1C, KIAA1785
UniProt & NIH Common Fund Data Resources
Find proteins for Q96JP0 (Homo sapiens) Explore Q96JP0  Go to UniProtKB:  Q96JP0
PHAROS:  Q96JP0 GTEx:  ENSG00000145780

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Cullin-2	B, D [auth F]	745	Homo sapiens	Mutation(s): 0  Gene Names: CUL2
UniProt & NIH Common Fund Data Resources
Find proteins for Q13617 (Homo sapiens) Explore Q13617  Go to UniProtKB:  Q13617
PHAROS:  Q13617 GTEx:  ENSG00000108094

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Elongin-B	E [auth C], G	118	Homo sapiens	Mutation(s): 0  Gene Names: ELOB, TCEB2
UniProt & NIH Common Fund Data Resources
Find proteins for Q15370 (Homo sapiens) Explore Q15370  Go to UniProtKB:  Q15370
PHAROS:  Q15370 GTEx:  ENSG00000103363

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Elongin-C	F [auth D], H	96	Homo sapiens	Mutation(s): 0  Gene Names: ELOC, TCEB1
UniProt & NIH Common Fund Data Resources
Find proteins for Q15369 (Homo sapiens) Explore Q15369  Go to UniProtKB:  Q15369
PHAROS:  Q15369 GTEx:  ENSG00000154582

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
ALA-ARG-ALA-ARG	I, J	4	Homo sapiens	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.28 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-03-04 
Deposition Author(s): Zhou, H., Xu, C.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2026-03-04
  Type: Initial release