9YED | pdb_00009yed

T-ring-PomB complex in Vibrio cholerae

• PDB DOI: https://doi.org/10.2210/pdb9YED/pdb
• EM Map EMD-72848: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Vibrio cholerae O1 biovar El Tor str. N16961
• Mutation(s): No 


• Deposited: 2025-09-24 Released: 2026-06-10 
• Deposition Author(s): Guo, W., Yue, J.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.98 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

Literature

In-situ cryo-EM structures reveal mechanisms of sheathed flagellar assembly, rotation, and disassembly in Vibrio cholerae

Wangbiao, G., Jian, Y., Jin, H.P., Fitnat, Y., Jun, L.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A2B2C2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - C2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - C2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 141.16 kDa 
• Atom Count: 9,930 
• Modeled Residue Count: 1,230 
• Deposited Residue Count: 1,230 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sodium-type flagellar protein MotX	A [auth AP1], E [auth EP1]	188	Vibrio cholerae O1 biovar El Tor str. N16961	Mutation(s): 0
UniProt
Find proteins for Q9KNX9 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KNX9  Go to UniProtKB:  Q9KNX9

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Sodium-type flagellar protein MotY	B [auth BP1], F [auth FP1]	272	Vibrio cholerae O1 biovar El Tor str. N16961	Mutation(s): 0
UniProt
Find proteins for Q9KT95 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KT95  Go to UniProtKB:  Q9KT95

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Chemotaxis protein PomB	C [auth CP1], D [auth DP1]	155	Vibrio cholerae O1 biovar El Tor str. N16961	Mutation(s): 0
UniProt
Find proteins for Q9KTK9 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KTK9  Go to UniProtKB:  Q9KTK9

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.98 Å
• Aggregation State: CELL 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21.2_5419
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-06-10 
Deposition Author(s): Guo, W., Yue, J.

---

Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01 AI087946
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	R01 AI132818

Revision History  

• Version 1.0: 2026-06-10
  Type: Initial release