7B0X

Crystal structure of the ternary complex of the E. coli type 1 pilus proteins FimC, FimI and the N-terminal domain of FimD

• PDB DOI: https://doi.org/10.2210/pdb7B0X/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli BL21(DE3), Escherichia coli
• Mutation(s): No 


• Deposited: 2020-11-23 Released: 2021-12-08 
• Deposition Author(s): Scharer, M.A., Zigova, Z., Giese, C., Puorger, C., Ignatov, O., Capitani, G., Glockshuber, R.
• Funding Organization(s): Swiss National Science Foundation

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.252 
• R-Value Work: 0.204 
• R-Value Observed: 0.205 

Starting Model: experimental

Literature

Comprehensive kinetic characterization of bacterial pilus rod assembly and assembly termination

Giese, C., Puorger, C., Ignatov, O., Zigova, Z., Weber, M., Scharer, M.A., Capitani, G., 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 PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 52.34 kDa 
• Atom Count: 4,085 
• Modelled Residue Count: 467 
• Deposited Residue Count: 476 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chaperone protein FimC	A [auth C]	211	Escherichia coli K-12	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
Fimbrin-like protein FimI	B [auth I]	140	Escherichia coli K-12	Mutation(s): 0  Gene Names: fimI, b4315, JW5779
UniProt
Find proteins for P39264 (Escherichia coli (strain K12)) Explore P39264  Go to UniProtKB:  P39264

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane usher protein FimD	C [auth D]	125	Escherichia coli K-12	Mutation(s): 0  Gene Names: fimD, b4317, JW5780
UniProt
Find proteins for P30130 (Escherichia coli (strain K12)) Explore P30130  Go to UniProtKB:  P30130

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	D	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.252 
• R-Value Work: 0.204 
• R-Value Observed: 0.205 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 35.24	α = 90
b = 104.16	β = 90
c = 132.16	γ = 90

Software Package:

Software Name	Purpose
XSCALE	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2021-12-08 
Deposition Author(s): Scharer, M.A., Zigova, Z., Giese, C., Puorger, C., Ignatov, O., Capitani, G., Glockshuber, R.

---

Funding Organization	Location	Grant Number
Swiss National Science Foundation		--

Revision History  

• Version 1.0: 2021-12-08
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-20
  Changes: Structure summary