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
  • Structures With Same Primary Citation

  • 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

    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 1BA114Escherichia coli K-12Mutation(s): 0 
Gene Names: mrcBpbpFponBb0149JW0145
EC: 2.4.1.129 (PDB Primary Data), 3.4.16.4 (PDB Primary Data)
Find proteins for P02919 (Escherichia coli (strain K12))
Explore P02919 
Go to UniProtKB:  P02919
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 
  • OLDERADO: 6G5R Olderado

Structure Validation

View Full Validation Report



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
    Changes: Data collection