8Z5V | pdb_00008z5v

Cryo-EM structure of the MS ring (C34) within the polar flagellar motor

• PDB DOI: https://doi.org/10.2210/pdb8Z5V/pdb
• EM Map EMD-39783: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Vibrio alginolyticus
• Mutation(s): No 


• Deposited: 2024-04-18 Released: 2025-10-22 
• Deposition Author(s): Zhang, L., Tan, J.X., Zhou, Y., Zhu, Y.Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC), Ministry of Science and Technology (MoST, China)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.93 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

Cryo-EM structure of the MS ring (C34) within the polar flagellar motor

Zhang, L., Tan, J.X., Zhou, Y., Zhu, Y.Q.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C34  (Explore in 3D)
Global Stoichiometry: Homo 34-mer - A34 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 2,173.13 kDa 
• Atom Count: 39,814 
• Modeled Residue Count: 5,032 
• Deposited Residue Count: 19,720 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar M-ring protein	A, AA [auth a], B, BA [auth b], C, CA [auth c], D, DA [auth d], E, EA [auth e], F, FA [auth f], G, GA [auth g], H, HA [auth h], I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	580	Vibrio alginolyticus	Mutation(s): 0
UniProt
Find proteins for Q75N27 (Vibrio alginolyticus) Explore Q75N27  Go to UniProtKB:  Q75N27

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.93 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487:
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-22 
Deposition Author(s): Zhang, L., Tan, J.X., Zhou, Y., Zhu, Y.Q.

---

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	81925024
National Natural Science Foundation of China (NSFC)	China	U23A20163
Ministry of Science and Technology (MoST, China)	China	2017YFA0503900

Revision History  

• Version 1.0: 2025-10-22
  Type: Initial release