8I21

Cryo-EM structure of 6-subunit Smc5/6 arm region

• PDB DOI: https://doi.org/10.2210/pdb8I21/pdb
• EM Map EMD-35128: EMDB EMDataResource

• Classification: CELL CYCLE
• Organism(s): Saccharomyces cerevisiae S288C
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2023-01-13 Released: 2024-06-26 
• Deposition Author(s): Jun, Z., Qian, L., Xiang, Z., Tong, C., Zhaoning, W., Duo, J., Zhenguo, C., Lanfeng, W.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 6.02 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structures of Smc5/6 in multiple states reveal its assembly and functional mechanisms.

Qian, L., Jun, Z., Xiang, Z., Wang, Z., Tong, C., Duo, J., Zhenguo, C., Wang, L.

(2024) Nat Struct Mol Biol 

• DOI: https://doi.org/10.1038/s41594-024-01319-1

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 284.83 kDa 
• Atom Count: 6,301 
• Modelled Residue Count: 772 
• Deposited Residue Count: 2,474 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Structural maintenance of chromosomes protein 6	A [auth B]	1,114	Saccharomyces cerevisiae S288C	Mutation(s): 0  Gene Names: SMC6
UniProt
Find proteins for Q12749 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q12749  Go to UniProtKB:  Q12749

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Structural maintenance of chromosomes protein 5	B [auth A]	1,093	Saccharomyces cerevisiae S288C	Mutation(s): 0  Gene Names: SMC5
UniProt
Find proteins for Q08204 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q08204  Go to UniProtKB:  Q08204

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
E3 SUMO-protein ligase MMS21	C	267	Saccharomyces cerevisiae S288C	Mutation(s): 0  Gene Names: NSE2 EC: 2.3.2
UniProt
Find proteins for P38632 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P38632  Go to UniProtKB:  P38632

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 6.02 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-26 
Deposition Author(s): Jun, Z., Qian, L., Xiang, Z., Tong, C., Zhaoning, W., Duo, J., Zhenguo, C., Lanfeng, W.

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Funding Organization	Location	Grant Number
Other government		--

Revision History  

• Version 1.0: 2024-06-26
  Type: Initial release