6G5S

Solution structure of the TPR domain of the cell division coordinator, CpoB


Experimental Data Snapshot

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

wwPDB Validation   3D Report Full Report


This is version 1.2 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:  
    6FZK, 6G5R, 6G5S

  • 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-membrane anchored PG synthases, including Penicillin-binding proteins (PBPs), which participate in dynamic protein complexes to facilitate cell wall growth ...

    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.


    Organizational Affiliation

    Institut de Biologie Structurale (IBS), Univ. Grenoble Alpes, CNRS, CEA, 71 avenue des Martyrs, 38000, Grenoble, France.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Cell division coordinator CpoBA146Escherichia coli K-12Mutation(s): 0 
Gene Names: cpoBybgFb0742JW0732
UniProt
Find proteins for P45955 (Escherichia coli (strain K12))
Explore P45955 
Go to UniProtKB:  P45955
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP45955
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 750 
  • Conformers Submitted: 20 
  • Selection Criteria: 20 
  • OLDERADO: 6G5S 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  (Full details and data files)

  • Version 1.0: 2018-08-08
    Type: Initial release
  • Version 1.1: 2018-11-07
    Changes: Data collection, Database references
  • Version 1.2: 2019-05-08
    Changes: Data collection