9KSL | pdb_00009ksl

Cryo-EM structure of the family 2A encapsulin from Mycolicibacterium smegmatis

• PDB DOI: https://doi.org/10.2210/pdb9KSL/pdb
• EM Map EMD-62552: EMDB EMDataResource

• Classification: VIRUS LIKE PARTICLE
• Organism(s): Mycolicibacterium smegmatis MC2 155
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-11-29 Released: 2026-06-03 
• Deposition Author(s): Mu, A., Wang, P.P., Wang, Q., Rao, Z.H.
• Funding Organization(s): Chinese Academy of Sciences, 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: 1.81 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

Cryo-EM structure of the family 2A encapsulin from Mycolicibacterium smegmatis

Mu, A., Wang, P.P., Wang, Q., Rao, Z.H.

To be published.

Biological Assembly 1  

Global Symmetry: Icosahedral - I  (Explore in 3D)
Global Stoichiometry: Homo 60-mer - A60 

Biological assembly 1 assigned by authors and generated by UCSF CHIMERA 1.18_b42531. (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 34.75 kDa 
• Atom Count: 2,330 
• Modeled Residue Count: 300 
• Deposited Residue Count: 315 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Major membrane protein I (MMP-I)	A	315	Mycolicibacterium smegmatis MC2 155	Mutation(s): 0  Gene Names: MSMEI_4424
UniProt
Find proteins for I7FQA7 (Mycolicibacterium smegmatis (strain ATCC 700084 / mc(2)155)) Explore I7FQA7  Go to UniProtKB:  I7FQA7

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 1.81 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	4.6.0
MODEL REFINEMENT	PHENIX	1.21.1_5286

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-06-03 
Deposition Author(s): Mu, A., Wang, P.P., Wang, Q., Rao, Z.H.

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Funding Organization	Location	Grant Number
Chinese Academy of Sciences	China	XDB08020200
Chinese Academy of Sciences	China	XDB37020203
Ministry of Science and Technology (MoST, China)	China	2017YFC0840300
Ministry of Science and Technology (MoST, China)	China	2020YFA0707500
National Natural Science Foundation of China (NSFC)	China	81520108019
National Natural Science Foundation of China (NSFC)	China	813300237
National Natural Science Foundation of China (NSFC)	China	31971118

Revision History  

• Version 1.0: 2026-06-03
  Type: Initial release