9C6G | pdb_00009c6g

Mcm double hexamer from human

• PDB DOI: https://doi.org/10.2210/pdb9C6G/pdb
• EM Map EMD-45246: EMDB EMDataResource

• Classification: REPLICATION
• Organism(s): Homo sapiens
• Mutation(s): No 


• Deposited: 2024-06-07 Released: 2025-08-27 
• Deposition Author(s): Liu, C., Xu, N., Lin, Q.
• Funding Organization(s): The University Grants Committee, Research Grants Council (RGC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.26 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

Literature

MCM2-7 double hexamer

Zhu, G., Liu, C.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 12-mer - A2B2C2D2E2F2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 12-mer - A3B2C2D2E2F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 1,093.32 kDa 
• Atom Count: 55,961 
• Modeled Residue Count: 7,030 
• Deposited Residue Count: 9,698 
• Unique protein chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM4	A [auth 0], D [auth 4]	863	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P33991 (Homo sapiens) Explore P33991  Go to UniProtKB:  P33991
PHAROS:  P33991 GTEx:  ENSG00000104738

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM2	B [auth 2], H [auth 8]	904	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P49736 (Homo sapiens) Explore P49736  Go to UniProtKB:  P49736
PHAROS:  P49736 GTEx:  ENSG00000073111

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM3	C [auth 3], I [auth 9]	808	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P25205 (Homo sapiens) Explore P25205  Go to UniProtKB:  P25205
PHAROS:  P25205 GTEx:  ENSG00000112118

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM5	E [auth 5], J [auth A]	734	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P33992 (Homo sapiens) Explore P33992  Go to UniProtKB:  P33992
PHAROS:  P33992 GTEx:  ENSG00000100297

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM6	F [auth 6], K [auth B]	821	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for Q14566 (Homo sapiens) Explore Q14566  Go to UniProtKB:  Q14566
PHAROS:  Q14566 GTEx:  ENSG00000076003

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
DNA replication licensing factor MCM7	G [auth 7], L [auth C]	719	Homo sapiens	Mutation(s): 0  EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P33993 (Homo sapiens) Explore P33993  Go to UniProtKB:  P33993
PHAROS:  P33993 GTEx:  ENSG00000166508

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.26 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-27 
Deposition Author(s): Liu, C., Xu, N., Lin, Q.

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Funding Organization	Location	Grant Number
The University Grants Committee, Research Grants Council (RGC)	Hong Kong	16101120

Revision History  

• Version 1.0: 2025-08-27
  Type: Initial release