5CEB

Bd3459 Predatory Endopeptidase from Bdellovibrio bacteriovorus, K38M form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Ankyrin-mediated self-protection during cell invasion by the bacterial predator Bdellovibrio bacteriovorus.

Lambert, C.Cadby, I.T.Till, R.Bui, N.K.Lerner, T.R.Hughes, W.S.Lee, D.J.Alderwick, L.J.Vollmer, W.Sockett, E.R.Lovering, A.L.

(2015) Nat Commun 6: 8884-8884

  • DOI: https://doi.org/10.1038/ncomms9884
  • Primary Citation of Related Structures:  
    5CEA, 5CEB, 5CEC, 5CED, 5CER

  • PubMed Abstract: 

    Predatory Bdellovibrio bacteriovorus are natural antimicrobial organisms, killing other bacteria by whole-cell invasion. Self-protection against prey-metabolizing enzymes is important for the evolution of predation. Initial prey entry involves the predator's peptidoglycan DD-endopeptidases, which decrosslink cell walls and prevent wasteful entry by a second predator. Here we identify and characterize a self-protection protein from B. bacteriovorus, Bd3460, which displays an ankyrin-based fold common to intracellular pathogens of eukaryotes. Co-crystal structures reveal Bd3460 complexation of dual targets, binding a conserved epitope of each of the Bd3459 and Bd0816 endopeptidases. Complexation inhibits endopeptidase activity and cell wall decrosslinking in vitro. Self-protection is vital - ΔBd3460 Bdellovibrio deleteriously decrosslink self-peptidoglycan upon invasion, adopt a round morphology, and lose predatory capacity and cellular integrity. Our analysis provides the first mechanistic examination of self-protection in Bdellovibrio, documents protection-multiplicity for products of two different genomic loci, and reveals an important evolutionary adaptation to an invasive predatory bacterial lifestyle.


  • Organizational Affiliation

    Centre for Genetics and Genomics, School of Biology, Nottingham University, Medical School, Queen's Medical Centre, Nottingham NG7 2UH, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bd3459
A, B
446Bdellovibrio bacteriovorus HD100Mutation(s): 2 
Gene Names: Bd3459
EC: 3.4.16.4
UniProt
Find proteins for Q6MHT0 (Bdellovibrio bacteriovorus (strain ATCC 15356 / DSM 50701 / NCIMB 9529 / HD100))
Explore Q6MHT0 
Go to UniProtKB:  Q6MHT0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6MHT0
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.93 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.196 
  • R-Value Observed: 0.198 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.93α = 63.89
b = 65.04β = 83.27
c = 73.816γ = 83.2
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/J015229/1

Revision History  (Full details and data files)

  • Version 1.0: 2015-12-09
    Type: Initial release
  • Version 1.1: 2015-12-16
    Changes: Database references
  • Version 1.2: 2017-08-30
    Changes: Author supporting evidence
  • Version 1.3: 2024-01-10
    Changes: Data collection, Database references, Refinement description