4YK2

Crystal Structure of the BID Domain of Bep9 from Bartonella clarridgeiae


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.214 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The BID Domain of Type IV Secretion Substrates Forms a Conserved Four-Helix Bundle Topped with a Hook.

Stanger, F.V.de Beer, T.A.Dranow, D.M.Schirmer, T.Phan, I.Dehio, C.

(2017) Structure 25: 203-211

  • DOI: https://doi.org/10.1016/j.str.2016.10.010
  • Primary Citation of Related Structures:  
    4YK1, 4YK2, 4YK3

  • PubMed Abstract: 

    The BID (Bep intracellular delivery) domain functions as secretion signal in a subfamily of protein substrates of bacterial type IV secretion (T4S) systems. It mediates transfer of (1) relaxases and the attached DNA during bacterial conjugation, and (2) numerous Bartonella effector proteins (Beps) during protein transfer into host cells infected by pathogenic Bartonella species. Furthermore, BID domains of Beps have often evolved secondary effector functions within host cells. Here, we provide crystal structures for three representative BID domains and describe a novel conserved fold characterized by a compact, antiparallel four-helix bundle topped with a hook. The conserved hydrophobic core provides a rigid scaffold to a surface that, despite a few conserved exposed residues and similarities in charge distribution, displays significant variability. We propose that the genuine function of BID domains as T4S signal may primarily depend on their rigid structure, while the plasticity of their surface may facilitate adaptation to secondary effector functions.


  • Organizational Affiliation

    Focal Area Infection Biology, Biozentrum University of Basel, 4056 Basel, Switzerland; Focal Area Structural Biology and Biophysics, Biozentrum University of Basel, 4056 Basel, Switzerland.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bartonella effector protein (Bep) substrate of VirB T4SS
A, B
147Bartonella clarridgeiae 73Mutation(s): 0 
Gene Names: BARCL_1032
UniProt
Find proteins for E6YIM5 (Bartonella clarridgeiae (strain CCUG 45776 / CIP 104772 / 73))
Explore E6YIM5 
Go to UniProtKB:  E6YIM5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE6YIM5
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.68α = 90
b = 62.31β = 90
c = 71.04γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
MR-Rosettaphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-03-09
    Type: Initial release
  • Version 1.1: 2017-01-11
    Changes: Database references
  • Version 1.2: 2023-09-27
    Changes: Data collection, Database references, Refinement description