3D9X

Structure of the head of the Bartonella adhesin BadA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.13 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure of the head of the Bartonella adhesin BadA

Szczesny, P.Linke, D.Ursinus, A.Bar, K.Schwarz, H.Riess, T.M.Kempf, V.A.Lupas, A.N.Martin, J.Zeth, K.

(2008) Plos Pathog. 4: e1000119-e1000119

  • DOI: 10.1371/journal.ppat.1000119

  • PubMed Abstract: 
  • Trimeric autotransporter adhesins (TAAs) are a major class of proteins by which pathogenic proteobacteria adhere to their hosts. Prominent examples include Yersinia YadA, Haemophilus Hia and Hsf, Moraxella UspA1 and A2, and Neisseria NadA. TAAs also ...

    Trimeric autotransporter adhesins (TAAs) are a major class of proteins by which pathogenic proteobacteria adhere to their hosts. Prominent examples include Yersinia YadA, Haemophilus Hia and Hsf, Moraxella UspA1 and A2, and Neisseria NadA. TAAs also occur in symbiotic and environmental species and presumably represent a general solution to the problem of adhesion in proteobacteria. The general structure of TAAs follows a head-stalk-anchor architecture, where the heads are the primary mediators of attachment and autoagglutination. In the major adhesin of Bartonella henselae, BadA, the head consists of three domains, the N-terminal of which shows strong sequence similarity to the head of Yersinia YadA. The two other domains were not recognizably similar to any protein of known structure. We therefore determined their crystal structure to a resolution of 1.1 A. Both domains are beta-prisms, the N-terminal one formed by interleaved, five-stranded beta-meanders parallel to the trimer axis and the C-terminal one by five-stranded beta-meanders orthogonal to the axis. Despite the absence of statistically significant sequence similarity, the two domains are structurally similar to domains from Haemophilus Hia, albeit in permuted order. Thus, the BadA head appears to be a chimera of domains seen in two other TAAs, YadA and Hia, highlighting the combinatorial evolutionary strategy taken by pathogens.


    Organizational Affiliation

    Department of Protein Evolution, Max Planck Institute for Developmental Biology, Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Adhesin A
A, B, C
163Bartonella henselaeMutation(s): 0 
Gene Names: badA
Find proteins for Q5MWV9 (Bartonella henselae)
Go to UniProtKB:  Q5MWV9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.13 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.156 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 29.870α = 65.87
b = 51.140β = 76.60
c = 58.620γ = 82.08
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
ADSCdata collection
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance