9X7V | pdb_00009x7v

Sheathed filament of the spirochete periplasmic flagella of Leptospira biflexa from the deleted fcpB_CL13 strain

• PDB DOI: https://doi.org/10.2210/pdb9X7V/pdb
• EM Map EMD-66647: EMDB EMDataResource

• Classification: MOTOR PROTEIN
• Organism(s): Leptospira biflexa
• Mutation(s): No 


• Deposited: 2025-10-17 Released: 2025-12-24 
• Deposition Author(s): Kawamoto, A., Nakamura, S., Koizumi, N.
• Funding Organization(s): Japan Society for the Promotion of Science (JSPS), Japan Science and Technology

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.70 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental

Literature

Cooperativity of sheath proteins in the flagellar assembly of Leptospira spirochete

Kawamoto, A., Kuribayashi, T., Morita, M., Nakamura, S., Koizumi, N.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 18-mer - A11B7 

Local Symmetry: Helical - H  (Explore in 3D)
Local Stoichiometry: Homo 11-mer - A11 Local Symmetry: Helical - H  (Explore in 3D)
Local Stoichiometry: Homo 7-mer - B7 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 596.71 kDa 
• Atom Count: 39,198 
• Modeled Residue Count: 4,868 
• Deposited Residue Count: 5,202 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellin	A, C [auth D], D [auth G], E [auth J], G [auth M], I [auth P], K [auth S], L [auth V], M [auth Y], O [auth b], Q [auth e]	282	Leptospira biflexa	Mutation(s): 0
UniProt
Find proteins for B0SQZ5 (Leptospira biflexa serovar Patoc (strain Patoc 1 / ATCC 23582 / Paris)) Explore B0SQZ5  Go to UniProtKB:  B0SQZ5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Bacterial flagellar sheath protein	B, F [auth K], H [auth N], J [auth Q], N [auth Z], P [auth c], R [auth f]	300	Leptospira biflexa	Mutation(s): 0
UniProt
Find proteins for B0STJ8 (Leptospira biflexa serovar Patoc (strain Patoc 1 / ATCC 23582 / Paris)) Explore B0STJ8  Go to UniProtKB:  B0STJ8

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.70 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.21.1_5286
RECONSTRUCTION	cryoSPARC	4.2.1

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-12-24 
Deposition Author(s): Kawamoto, A., Nakamura, S., Koizumi, N.

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Funding Organization	Location	Grant Number
Japan Society for the Promotion of Science (JSPS)	Japan	24K02274
Japan Science and Technology	Japan	JPMJPR21E5

Revision History  

• Version 1.0: 2025-12-24
  Type: Initial release