1CWV

CRYSTAL STRUCTURE OF INVASIN: A BACTERIAL INTEGRIN-BINDING PROTEIN

• PDB DOI: https://doi.org/10.2210/pdb1CWV/pdb

• Classification: STRUCTURAL PROTEIN
• Organism(s): Yersinia pseudotuberculosis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1999-08-26 Released: 1999-10-13 
• Deposition Author(s): Bjorkman, P.J., Hamburger, Z.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.274 
• R-Value Work: 0.224 
• R-Value Observed: 0.224 

Literature

Crystal structure of invasin: a bacterial integrin-binding protein.

Hamburger, Z.A., Brown, M.S., Isberg, R.R., Bjorkman, P.J.

(1999) Science 286: 291-295

• PubMed: 10514372 
• DOI: https://doi.org/10.1126/science.286.5438.291
• Primary Citation of Related Structures:  
  1CWV


• PubMed Abstract: 
  

  The Yersinia pseudotuberculosis invasin protein promotes bacterial entry by binding to host cell integrins with higher affinity than natural substrates such as fibronectin. The 2.3 angstrom crystal structure of the invasin extracellular region reveals five domains that form a 180 angstrom rod with structural similarities to tandem fibronectin type III domains. The integrin-binding surfaces of invasin and fibronectin include similarly located key residues, but in the context of different folds and surface shapes. The structures of invasin and fibronectin provide an example of convergent evolution, in which invasin presents an optimized surface for integrin binding, in comparison with host substrates.

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Organizational Affiliation: 

Division of Biology 156-29, Howard Hughes Medical Institute, California Institute of Technology, Pasadena, CA 91125, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 52.13 kDa 
• Atom Count: 3,801 
• Modelled Residue Count: 484 
• Deposited Residue Count: 492 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
INVASIN	A	492	Yersinia pseudotuberculosis	Mutation(s): 0
UniProt
Find proteins for P11922 (Yersinia pseudotuberculosis serotype I (strain IP32953)) Explore P11922  Go to UniProtKB:  P11922

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CIT	B [auth A]	CITRIC ACID C6 H8 O7 KRKNYBCHXYNGOX-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.274 
• R-Value Work: 0.224 
• R-Value Observed: 0.224 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.14	α = 90
b = 50.66	β = 98.34
c = 97.92	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing
X-PLOR	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-10-13 
Deposition Author(s): Bjorkman, P.J., Hamburger, Z.A.

Revision History  

• Version 1.0: 1999-10-13
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance