2ZQK

Crystal structure of intimin-Tir68 complex

• PDB DOI: https://doi.org/10.2210/pdb2ZQK/pdb

• Classification: CELL ADHESION
• Organism(s): Escherichia coli O157:H7
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2008-08-12 Released: 2009-08-18 
• Deposition Author(s): Ma, Y., Gao, F., Li, D.-F., Gao, G.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free: 
  0.300 (Depositor), 0.300 (DCC) 
• R-Value Work: 
  0.241 (Depositor), 0.240 (DCC) 
• R-Value Observed: 
  0.241 (Depositor) 

Starting Model: experimental

Literature

Structural insight into the interaction between intimin and Tir of enterohaemorrhagic E coli: evidence for a dynamic sequential clustering-aggregating-reticulating model

Ma, Y., Zou, Q., Gao, G.F.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 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 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 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 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 generated by PISA (software)

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 generated by PISA (software)

Biological Assembly 5  

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

Biological assembly 5 generated by PISA (software)

Biological Assembly 6  

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

Biological assembly 6 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 74.96 kDa 
• Atom Count: 4,739 
• Modelled Residue Count: 621 
• Deposited Residue Count: 686 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Intimin	A, D [auth B]	189	Escherichia coli O157:H7	Mutation(s): 0  Gene Names: intimin adherence protein 747-934
UniProt
Find proteins for P43261 (Escherichia coli O157:H7) Explore P43261  Go to UniProtKB:  P43261

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative translocated intimin receptor protein (Translocated intimin receptor Tir)	B [auth M], C [auth N], E [auth C], F [auth D]	77	Escherichia coli O157:H7	Mutation(s): 0  Gene Names: Tir 269-336
UniProt
Find proteins for Q7DB77 (Escherichia coli O157:H7) Explore Q7DB77  Go to UniProtKB:  Q7DB77

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.80 Å
• R-Value Free:  0.300 (Depositor), 0.300 (DCC) 
• R-Value Work:  0.241 (Depositor), 0.240 (DCC) 
• R-Value Observed: 0.241 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 116.68	α = 90
b = 42.31	β = 101.13
c = 182.08	γ = 90

Software Package:

Software Name	Purpose
ADSC	data collection
PHASES	phasing
CNS	refinement
MOSFLM	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-08-18 
Deposition Author(s): Ma, Y., Gao, F., Li, D.-F., Gao, G.F.

Revision History  

• Version 1.0: 2009-08-18
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-11-01
  Changes: Data collection, Database references, Refinement description
• Version 1.3: 2024-11-06
  Changes: Structure summary