5LP5

Complex between Penicillin-Binding Protein (PBP2) and MreC from Helicobacter pylori


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.258 

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

Molecular architecture of the PBP2-MreC core bacterial cell wall synthesis complex.

Contreras-Martel, C.Martins, A.Ecobichon, C.Trindade, D.M.Mattei, P.J.Hicham, S.Hardouin, P.Ghachi, M.E.Boneca, I.G.Dessen, A.

(2017) Nat Commun 8: 776-776

  • DOI: https://doi.org/10.1038/s41467-017-00783-2
  • Primary Citation of Related Structures:  
    5LP4, 5LP5

  • PubMed Abstract: 

    Bacterial cell wall biosynthesis is an essential process that requires the coordinated activity of peptidoglycan biosynthesis enzymes within multi-protein complexes involved in cell division (the "divisome") and lateral wall growth (the "elongasome"). MreC is a structural protein that serves as a platform during wall elongation, scaffolding other essential peptidoglycan biosynthesis macromolecules, such as penicillin-binding proteins. Despite the importance of these multi-partite complexes, details of their architecture have remained elusive due to the transitory nature of their interactions. Here, we present the crystal structures of the soluble PBP2:MreC core elongasome complex from Helicobacter pylori, and of uncomplexed PBP2. PBP2 recognizes the two-winged MreC molecule upon opening of its N-terminal region, revealing a hydrophobic zipper that serves as binding platform. The PBP2:MreC interface is essential both for protein recognition in vitro and maintenance of bacterial shape and growth. This work allows visualization as to how peptidoglycan machinery proteins are scaffolded, revealing interaction regions that could be targeted by tailored inhibitors.Bacterial wall biosynthesis is a complex process that requires the coordination of multiple enzymes. Here, the authors structurally characterize the PBP2:MreC complex involved in peptidoglycan elongation and cross-linking, and demonstrate that its disruption leads to loss of H. pylori shape and inability to sustain growth.


  • Organizational Affiliation

    Univ. Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale (IBS), Bacterial Pathogenesis Group, F-38000, Grenoble, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Penicillin-binding protein 2 (Pbp2)
A, B
594Helicobacter pylori 26695Mutation(s): 0 
Gene Names: HP_1565
UniProt
Find proteins for O26085 (Helicobacter pylori (strain ATCC 700392 / 26695))
Explore O26085 
Go to UniProtKB:  O26085
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO26085
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Rod shape-determining protein (MreC)
C, D, E, F
248Helicobacter pylori 26695Mutation(s): 0 
Gene Names: HP_1372
UniProt
Find proteins for O25924 (Helicobacter pylori (strain ATCC 700392 / 26695))
Explore O25924 
Go to UniProtKB:  O25924
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO25924
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.74 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.258 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 338.656α = 90
b = 48.34β = 113.02
c = 151.513γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFrance13-BSV8-0015-01
FAPESPBrazil11/52067-6
European Research CouncilFrance202283

Revision History  (Full details and data files)

  • Version 1.0: 2017-08-23
    Type: Initial release
  • Version 1.1: 2017-08-30
    Changes: Database references, Structure summary
  • Version 1.2: 2017-10-18
    Changes: Database references
  • Version 1.3: 2024-01-10
    Changes: Author supporting evidence, Data collection, Database references, Refinement description