9FX8 | pdb_00009fx8

Cryo-EM structure of the FimI-bound type 1 pilus assembly platform complex - Local refinement

• PDB DOI: https://doi.org/10.2210/pdb9FX8/pdb
• EM Map EMD-50843: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3), Escherichia coli
• Mutation(s): No 


• Deposited: 2024-07-01 Released: 2025-06-04 
• Deposition Author(s): Bachmann, P., Afanasyev, P., Boehringer, D., Glockshuber, R.
• Funding Organization(s): Swiss National Science Foundation

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of the FimI-bound type 1 pilus assembly platform complex - Local refinement

Bachmann, P., Afanasyev, P., Boehringer, D., Glockshuber, R.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 134 kDa 
• Atom Count: 7,738 
• Modeled Residue Count: 1,000 
• Deposited Residue Count: 1,219 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chaperone protein FimC	A [auth C]	212	Escherichia coli	Mutation(s): 0  Gene Names: fimC, b4316, JW4279
UniProt
Find proteins for P31697 (Escherichia coli (strain K12)) Explore P31697  Go to UniProtKB:  P31697

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane usher protein FimD	B [auth D]	847	Escherichia coli	Mutation(s): 0  Gene Names: fimD, b4317, JW5780
UniProt
Find proteins for P30130 (Escherichia coli (strain K12)) Explore P30130  Go to UniProtKB:  P30130

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Fimbrin-like protein FimI	C [auth I]	160	Escherichia coli	Mutation(s): 0  Gene Names: fimI, b4315, JW5779
UniProt
Find proteins for P39264 (Escherichia coli (strain K12)) Explore P39264  Go to UniProtKB:  P39264

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-06-04 
Deposition Author(s): Bachmann, P., Afanasyev, P., Boehringer, D., Glockshuber, R.

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Funding Organization	Location	Grant Number
Swiss National Science Foundation	Switzerland	310030_201234

Revision History  

• Version 1.0: 2025-06-04
  Type: Initial release