9IYC | pdb_00009iyc

P ring on polyrod-P ring complex from Salmonella TH26292 strain

• PDB DOI: https://doi.org/10.2210/pdb9IYC/pdb
• EM Map EMD-60995: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium
• Expression System: Salmonella enterica subsp. enterica serovar Typhimurium
• Mutation(s): No 


• Deposited: 2024-07-30 Released: 2026-03-04 
• Deposition Author(s): Yamaguchi, T., Kato, T., Minamino, T., Namba, K.
• Funding Organization(s): Japan Society for the Promotion of Science (JSPS), Japan Agency for Medical Research and Development (AMED)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.33 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Structural insights into the assembly mechanism of the molecular bushing in the bacterial flagellar motor

Yamaguchi, T., Kato, T., Minamino, T., Namba, K.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C26  (Explore in 3D)
Global Stoichiometry: Homo 26-mer - A26 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 943.8 kDa 
• Atom Count: 57,928 
• Modeled Residue Count: 7,878 
• Deposited Residue Count: 8,996 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar P-ring protein	A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z	346	Salmonella enterica subsp. enterica serovar Typhimurium	Mutation(s): 0  Gene Names: flgI, fla FIX, flaM, STM1181
UniProt
Find proteins for P15930 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P15930  Go to UniProtKB:  P15930

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.33 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21-rc
RECONSTRUCTION	RELION	3.1.1

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-03-04 
Deposition Author(s): Yamaguchi, T., Kato, T., Minamino, T., Namba, K.

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Funding Organization	Location	Grant Number
Japan Society for the Promotion of Science (JSPS)	Japan	JP25000013MEXT KAKENHI Grant Number JP15H01640,JP20H05532
Japan Society for the Promotion of Science (JSPS)	Japan	JP18K06155
Japan Society for the Promotion of Science (JSPS)	Japan	JP26293097
Japan Society for the Promotion of Science (JSPS)	Japan	JP19H03182
Japan Society for the Promotion of Science (JSPS)	Japan	JP15H01640
Japan Society for the Promotion of Science (JSPS)	Japan	Japan Society for the Promotion of Science (JSPS)
Japan Agency for Medical Research and Development (AMED)	Japan	JP19am0101117
Japan Agency for Medical Research and Development (AMED)	Japan	JP17pc0101020
Japan Society for the Promotion of Science (JSPS)	Japan	JP21J12128

Revision History  

• Version 1.0: 2026-03-04
  Type: Initial release