1RWR

Crystal structure of filamentous hemagglutinin secretion domain


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 

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This is version 1.2 of the entry. See complete history


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

  • 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. ...

    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.


    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Filamentous hemagglutinin A301Bordetella pertussisMutation(s): 0 
Find proteins for P12255 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Explore P12255 
Go to UniProtKB:  P12255
Protein Feature View
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  • Reference Sequence
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 = 108.98α = 90
b = 43.04β = 104.07
c = 53.8γ = 90
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

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