2IZP

BipD - an invasion prtein associated with the type-III secretion system of Burkholderia pseudomallei.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.299 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

High Resolution Structure of Bipd: An Invasion Protein Associated with the Type III Secretion System of Burkholderia Pseudomallei.

Erskine, P.T.Knight, M.J.Ruaux, A.Mikolajek, H.Wong-Fat-Sang, N.Withers, J.Gill, R.Wood, S.P.Wood, M.Fox, G.C.Cooper, J.B.

(2006) J.Mol.Biol. 363: 125

  • DOI: 10.1016/j.jmb.2006.07.069

  • PubMed Abstract: 
  • Burkoldheria pseudomallei is a Gram-negative bacterium that possesses a protein secretion system similar to those found in Salmonella and Shigella. Recent work has indicated that the protein encoded by the BipD gene of B. pseudomallei is an important ...

    Burkoldheria pseudomallei is a Gram-negative bacterium that possesses a protein secretion system similar to those found in Salmonella and Shigella. Recent work has indicated that the protein encoded by the BipD gene of B. pseudomallei is an important secreted virulence factor. BipD is similar in sequence to IpaD from Shigella and SipD from Salmonella and is therefore likely to be a translocator protein in the type-III secretion system of B. pseudomallei. The crystal structure of BipD has been solved at a resolution of 2.1 A revealing the detailed tertiary fold of the molecule. The overall structure is appreciably extended and consists of a bundle of antiparallel alpha-helical segments with two small beta-sheet regions. The longest helices of the molecule form a four-helix bundle and most of the remaining secondary structure elements (three helices and two three-stranded beta-sheets) are formed by the region linking the last two helices of the four-helix bundle. The structure suggests that the biologically active form of the molecule may be a dimer formed by contacts involving the C-terminal alpha-helix, which is the most strongly conserved part of the protein. Comparison of the structure of BipD with immunological and other data for IpaD indicates that the C-terminal alpha-helix is also involved in contacts with other proteins that form the translocon.


    Organizational Affiliation

    School of Biological Sciences, University of Southampton, Bassett Crescent East, Southampton, SO16 7PX, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PUTATIVE MEMBRANE ANTIGEN
A, B
303Burkholderia pseudomallei (strain K96243)Mutation(s): 0 
Gene Names: bipD
Find proteins for Q63K37 (Burkholderia pseudomallei (strain K96243))
Go to UniProtKB:  Q63K37
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.299 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 53.509α = 90.00
b = 56.204β = 94.47
c = 84.208γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SHELXL-97refinement
SOLVEphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-09-06
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance