Biological Assembly 1  

 3D View: Structure | Electron Density

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 29.72 kDa 
• Atom Count: 2361 
• Residue Count: 297 
• Unique protein chains: 1

1RWR

Crystal structure of filamentous hemagglutinin secretion domain

• DOI: 10.2210/pdb1RWR/pdb

• Classification: CELL ADHESION
• Organism(s): Bordetella pertussis
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2003-12-17 Released: 2004-04-13 
• Deposition Author(s): Clantin, B., Villeret, V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.190 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 

Literature

The crystal structure of filamentous hemagglutinin secretion domain and its implications for the two-partner secretion pathway

Clantin, B., Hodak, H., Willery, E., Locht, C., Jacob-Dubuisson, F., Villeret, V.

(2004) Proc Natl Acad Sci U S A 101: 6194-6199

• PubMed: 15079085 
• DOI: 10.1073/pnas.0400291101
• Primary Citation of Related Structures:  
  1RWR


• PubMed Abstract: 
  

Filamentous hemagglutinin (FHA), the major 230-kDa adhesin of the whooping cough agent Bordetella pertussis, is one of the most efficiently secreted proteins in Gram-negative bacteria. FHA is secreted by means of the two-partner secretion (TPS) pathway. Several important human, animal, and plant pathogens also secrete adhesins and other virulence factors by using this mode of secretion. A TPS system is composed of two separate proteins, with TpsA the secreted protein and TpsB its associated specific outermembrane transporter. All TPS-secreted proteins contain a distinctive N-proximal module essential for secretion, the TPS domain. We report here the 1.7- A structure of a functionally secreted 30-kDa N-terminal fragment of FHA. It reveals that the TPS domain folds into a beta-helix, with three extrahelical motifs, a beta-hairpin, a four-stranded beta-sheet, and an N-terminal capping, mostly formed by the nonconserved regions of the TPS domain. The structure thus explains why the TPS domain is able to initiate folding of the beta-helical motifs that form the central domain of the adhesin, because it is itself a beta-helical scaffold. It also contains less conserved extrahelical regions most likely involved in specific properties, such as the recognition of the outer-membrane transporter. This structure is representative of the TPS domains found so far in >100 secreted proteins from pathogenic bacteria. It also provides a mechanistic insight into how protein folding may be linked to secretion in the TPS pathway.

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Organizational Affiliation: 

Institut Fédératif de Recherche du Centre National de la Recherche Scientifique 3, Lille Cedex, France.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Filamentous hemagglutinin	A	301	Bordetella pertussis	Mutation(s): 0
Find proteins for P12255 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251)) Explore P12255  Go to UniProtKB:  P12255

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.72 Å
• R-Value Free: 0.190 
• R-Value Work: 0.144 
• R-Value Observed: 0.146 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 108.98	α = 90
b = 43.04	β = 104.07
c = 53.8	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2003-12-17 
• Released Date: 2004-04-13 
Deposition Author(s): Clantin, B., Villeret, V.

Revision History 

• Version 1.0: 2004-04-13
  Type: Initial release
  
• Version 1.1: 2008-04-29
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance