8XP1

Cryo-EM structure of the protomers of the C ring in the CW state

• PDB DOI: https://doi.org/10.2210/pdb8XP1/pdb
• EM Map EMD-38547: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2024-01-02 Released: 2024-09-04 
• Deposition Author(s): Tan, J.X., Zhang, L., Zhou, Y., Zhu, Y.Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC), Ministry of Science and Technology (MoST, China)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 4.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

Cryo-EM structure of the protomers of the C ring in the CW state

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

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 21-mer - A9B3C3D3E3 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 584.01 kDa 
• Atom Count: 24,297 
• Modelled Residue Count: 3,084 
• Deposited Residue Count: 5,295 
• Unique protein chains: 5

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar motor switch protein FliN	A [auth 0], F [auth o], G [auth u], H [auth AA], M [auth p], N [auth v], O [auth AB], T [auth q], U [auth w]	137	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P26419 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P26419  Go to UniProtKB:  P26419

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar M-ring protein	B [auth C], I [auth D], P [auth E]	560	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P15928 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P15928  Go to UniProtKB:  P15928

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar motor switch protein FliM	C [auth S], J [auth T], Q [auth U]	334	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P26418 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P26418  Go to UniProtKB:  P26418

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar motor switch protein FliG	D [auth Z], K [auth a], R [auth b]	331	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P0A1J9 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A1J9  Go to UniProtKB:  P0A1J9

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Chemotaxis protein CheY	E [auth h], L [auth i], S [auth j]	129	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 2  Gene Names: cheY, STM1916
UniProt
Find proteins for P0A2D5 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P0A2D5  Go to UniProtKB:  P0A2D5

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 4.40 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC	4.1.1
MODEL REFINEMENT	PHENIX	1.20.1_4487:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-09-04 
Deposition Author(s): Tan, J.X., Zhang, L., Zhou, Y., Zhu, Y.Q.

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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: 2024-09-04
  Type: Initial release