6G5R

Structure of the UB2H domain of E.coli PBP1B in complex with LpoB


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Induced conformational changes activate the peptidoglycan synthase PBP1B.

Egan, A.J.F.Maya-Martinez, R.Ayala, I.Bougault, C.M.Banzhaf, M.Breukink, E.Vollmer, W.Simorre, J.P.

(2018) Mol. Microbiol. 110: 335-356

  • DOI: 10.1111/mmi.14082
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacteria surround their cytoplasmic membrane with an essential, stress-bearing peptidoglycan (PG) layer consisting of glycan chains linked by short peptides into a mesh-like structure. Growing and dividing cells expand their PG layer using inner-memb ...

    Bacteria surround their cytoplasmic membrane with an essential, stress-bearing peptidoglycan (PG) layer consisting of glycan chains linked by short peptides into a mesh-like structure. Growing and dividing cells expand their PG layer using inner-membrane anchored PG synthases, including Penicillin-binding proteins (PBPs), which participate in dynamic protein complexes to facilitate cell wall growth. In Escherichia coli, and presumably other Gram-negative bacteria, growth of the mainly single layered PG is regulated by outer membrane-anchored lipoproteins. The lipoprotein LpoB is required to activate PBP1B, which is a major, bi-functional PG synthase with glycan chain polymerising (glycosyltransferase) and peptide cross-linking (transpeptidase) activities. In this work we show how the binding of LpoB to the regulatory UB2H domain of PBP1B activates both activities. Binding induces structural changes in the UB2H domain, which transduce to the two catalytic domains by distinct allosteric pathways. We also show how an additional regulator protein, CpoB, is able to selectively modulate the TPase activation by LpoB without interfering with GTase activation.


    Related Citations: 
    • Structural Insights into Inhibition of Escherichia coli Penicillin-binding Protein 1B.
      King, D.T.,Wasney, G.A.,Nosella, M.,Fong, A.,Strynadka, N.C.
      (2017) J. Biol. Chem. 292: 979


    Organizational Affiliation

    Bijvoet Center for Biomolecular Research, Department of Biochemistry of Membranes, University of Utrecht, Padualaan 8, 3584 CH, Utrecht, The Netherlands.,European Molecular Biology Laboratory Heidelberg, Genome Biology Unit, Meyerhofstra├če 1, 69117, Heidelberg, Germany.,Institute of Microbiology & Infection and School of Biosciences, University of Birmingham, Edgbaston, Birmingham , B15 2TT, UK.,The Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Richardson Road, Newcastle upon Tyne, NE2 4AX, UK.,Institut de Biologie Structurale (IBS), Univ. Grenoble Alpes, CNRS, CEA, 71 avenue des Martyrs, 38000, Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Penicillin-binding protein 1B
A
114Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: mrcB (pbpF, ponB)
Find proteins for P02919 (Escherichia coli (strain K12))
Go to UniProtKB:  P02919
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-14-JAMR-0003
Wellcome TrustUnited Kingdom101824/Z/13/Z
French National Research AgencyFranceANR-10-INSB-05-02

Revision History 

  • Version 1.0: 2019-02-20
    Type: Initial release
  • Version 1.1: 2019-05-08
    Type: Data collection