8WK4

Cryo-EM structure of the MS ring with FlgB and FliE within the flagellar motor-hook complex in the CW state.

• PDB DOI: https://doi.org/10.2210/pdb8WK4/pdb
• EM Map EMD-37595: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
• Mutation(s): No 


• Deposited: 2023-09-27 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: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Cryo-EM structure of the MS ring with FlgB and FliE within the flagellar motor-hook complex 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 45-mer - A34B6C5 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 45-mer - A34B5C1D1E1F1G1H1 

Local Symmetry: Cyclic - C34  (Explore in 3D)
Local Stoichiometry: Homo 34-mer - A34 Local Symmetry: Cyclic - C6  (Explore in 3D)
Local Stoichiometry: Homo 6-mer - B6 Local Symmetry: Cyclic - C5  (Explore in 3D)
Local Stoichiometry: Homo 5-mer - C5 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 2,226.3 kDa 
• Atom Count: 44,690 
• Modelled Residue Count: 5,771 
• Deposited Residue Count: 20,354 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar hook-basal body complex protein FliE	A [auth i], B [auth j], C [auth k], D [auth l], E [auth m], F [auth n]	104	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P26462 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P26462  Go to UniProtKB:  P26462

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar basal body rod protein FlgB	G [auth o], H [auth p], I [auth q], J [auth r], K [auth s]	138	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P16437 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P16437  Go to UniProtKB:  P16437

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar M-ring protein	AA [auth P], BA [auth Q], CA [auth R], DA [auth S], EA [auth T], FA [auth U], GA [auth V], HA [auth W], IA [auth X], JA [auth Y], KA [auth Z], L [auth A], LA [auth a], M [auth B], MA [auth b], N [auth C], NA [auth c], O [auth D], OA [auth d], P [auth E], PA [auth e], Q [auth F], QA [auth f], R [auth G], RA [auth g], S [auth H], SA [auth h], T [auth I], U [auth J], V [auth K], W [auth L], X [auth M], Y [auth N], Z [auth O]	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

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.70 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