Experimental Data Snapshot

  • Resolution: 3.50 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

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Self-association of MreC as a regulatory signal in bacterial cell wall elongation.

Martins, A.Contreras-Martel, C.Janet-Maitre, M.Miyachiro, M.M.Estrozi, L.F.Trindade, D.M.Malospirito, C.C.Rodrigues-Costa, F.Imbert, L.Job, V.Schoehn, G.Attree, I.Dessen, A.

(2021) Nat Commun 12: 2987-2987

  • DOI: https://doi.org/10.1038/s41467-021-22957-9
  • Primary Citation of Related Structures:  
    6ZLV, 6ZM0

  • PubMed Abstract: 

    The elongasome, or Rod system, is a protein complex that controls cell wall formation in rod-shaped bacteria. MreC is a membrane-associated elongasome component that co-localizes with the cytoskeletal element MreB and regulates the activity of cell wall biosynthesis enzymes, in a process that may be dependent on MreC self-association. Here, we use electron cryo-microscopy and X-ray crystallography to determine the structure of a self-associated form of MreC from Pseudomonas aeruginosa in atomic detail. MreC monomers interact in head-to-tail fashion. Longitudinal and lateral interfaces are essential for oligomerization in vitro, and a phylogenetic analysis of proteobacterial MreC sequences indicates the prevalence of the identified interfaces. Our results are consistent with a model where MreC's ability to alternate between self-association and interaction with the cell wall biosynthesis machinery plays a key role in the regulation of elongasome activity.

  • Organizational Affiliation

    Univ. Grenoble Alpes, CEA, CNRS, Institut de Biologie Structurale (IBS), Grenoble, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Rod shape-determining protein MreC
A, B, C, D
176Pseudomonas aeruginosaMutation(s): 0 
Gene Names: mreCGNQ20_16665
Find proteins for Q9HVU1 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HVU1 
Go to UniProtKB:  Q9HVU1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HVU1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.50 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Sao Paulo Research Foundation (FAPESP)Brazil2011/52067-6
Sao Paulo Research Foundation (FAPESP)Brazil2017/12436-9
French National Research AgencyFranceANR-18-CE11-0019
Foundation for Medical Research (France)FranceDEQ20170336705
Sao Paulo Research Foundation (FAPESP)Brazil2015/19906-5
French National Research AgencyFranceANR-10-INBS-05-02
French National Research AgencyFranceANR-17-EURE-0003

Revision History  (Full details and data files)

  • Version 1.0: 2021-03-17
    Type: Initial release
  • Version 1.1: 2021-09-29
    Changes: Data collection, Database references, Source and taxonomy