9L0D | pdb_00009l0d

Cryo-EM structure of the human MON1A/CCZ1/C18orf8 complex

• PDB DOI: https://doi.org/10.2210/pdb9L0D/pdb
• EM Map EMD-62697: EMDB EMDataResource

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2024-12-12 Released: 2025-03-19 
• Deposition Author(s): Tang, Y., Han, Y., Zhang, Y., Pan, L.
• Funding Organization(s): Ministry of Science and Technology (MoST, China), National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.41 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Mechanistic insights into the GEF activity of the human MON1A/CCZ1/C18orf8 complex.

Tang, Y., Han, Y., Guo, Z., Li, Y., Gong, X., Zhang, Y., Liu, H., Zhou, X., Xu, D., Zhang, Y., Pan, L.

(2025) Protein Cell 16: 739-744

• PubMed: 40036671 
• DOI: https://doi.org/10.1093/procel/pwaf018
• Primary Citation of Related Structures:  
  9L0D

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Organizational Affiliation: 
• State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai 200032, China.
Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China.
School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 202.1 kDa 
• Atom Count: 13,894 
• Modeled Residue Count: 1,718 
• Deposited Residue Count: 1,764 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Vacuolar fusion protein MON1 homolog A	A	418	Homo sapiens	Mutation(s): 0  Gene Names: MON1A, SAND1
UniProt & NIH Common Fund Data Resources
Find proteins for Q86VX9 (Homo sapiens) Explore Q86VX9  Go to UniProtKB:  Q86VX9
PHAROS:  Q86VX9 GTEx:  ENSG00000164077

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Vacuolar fusion protein CCZ1 homolog B	B	482	Homo sapiens	Mutation(s): 0  Gene Names: CCZ1B, C7orf28B
UniProt & NIH Common Fund Data Resources
Find proteins for P86791 (Homo sapiens) Explore P86791  Go to UniProtKB:  P86791
GTEx:  ENSG00000122674

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Regulator of MON1-CCZ1 complex	C	657	Homo sapiens	Mutation(s): 0  Gene Names: RMC1, C18orf8, MIC1, WDR98
UniProt & NIH Common Fund Data Resources
Find proteins for Q96DM3 (Homo sapiens) Explore Q96DM3  Go to UniProtKB:  Q96DM3
PHAROS:  Q96DM3 GTEx:  ENSG00000141452

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Ras-related protein Rab-7a	D	207	Homo sapiens	Mutation(s): 0  Gene Names: RAB7A, RAB7 EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P51149 (Homo sapiens) Explore P51149  Go to UniProtKB:  P51149
PHAROS:  P51149 GTEx:  ENSG00000075785

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.41 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-19 
Deposition Author(s): Tang, Y., Han, Y., Zhang, Y., Pan, L.

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Funding Organization	Location	Grant Number
Ministry of Science and Technology (MoST, China)	China	2022ZD0207400
National Natural Science Foundation of China (NSFC)	China	92253301
National Natural Science Foundation of China (NSFC)	China	32071219

Revision History  

• Version 1.0: 2025-03-19
  Type: Initial release
  
• Version 1.1: 2025-08-27
  Changes: Data collection, Database references