Crystal structure of Thermus thermophilus Rod shape determining protein RodA (Q5SIX3_THET8)

Experimental Data Snapshot

  • Resolution: 2.91 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.234 

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This is version 1.3 of the entry. See complete history


Structure of the peptidoglycan polymerase RodA resolved by evolutionary coupling analysis.

Sjodt, M.Brock, K.Dobihal, G.Rohs, P.D.A.Green, A.G.Hopf, T.A.Meeske, A.J.Srisuknimit, V.Kahne, D.Walker, S.Marks, D.S.Bernhardt, T.G.Rudner, D.Z.Kruse, A.C.

(2018) Nature 556: 118-121

  • DOI: https://doi.org/10.1038/nature25985
  • Primary Citation of Related Structures:  
    6BAR, 6BAS

  • PubMed Abstract: 

    The shape, elongation, division and sporulation (SEDS) proteins are a large family of ubiquitous and essential transmembrane enzymes with critical roles in bacterial cell wall biology. The exact function of SEDS proteins was for a long time poorly understood, but recent work has revealed that the prototypical SEDS family member RodA is a peptidoglycan polymerase-a role previously attributed exclusively to members of the penicillin-binding protein family. This discovery has made RodA and other SEDS proteins promising targets for the development of next-generation antibiotics. However, little is known regarding the molecular basis of SEDS activity, and no structural data are available for RodA or any homologue thereof. Here we report the crystal structure of Thermus thermophilus RodA at a resolution of 2.9 Å, determined using evolutionary covariance-based fold prediction to enable molecular replacement. The structure reveals a ten-pass transmembrane fold with large extracellular loops, one of which is partially disordered. The protein contains a highly conserved cavity in the transmembrane domain, reminiscent of ligand-binding sites in transmembrane receptors. Mutagenesis experiments in Bacillus subtilis and Escherichia coli show that perturbation of this cavity abolishes RodA function both in vitro and in vivo, indicating that this cavity is catalytically essential. These results provide a framework for understanding bacterial cell wall synthesis and SEDS protein function.

  • Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Rod shape determining protein RodA359Thermus thermophilus HB8Mutation(s): 0 
Gene Names: TTHA1241
Membrane Entity: Yes 
Find proteins for Q5SIX3 (Thermus thermophilus (strain ATCC 27634 / DSM 579 / HB8))
Explore Q5SIX3 
Go to UniProtKB:  Q5SIX3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5SIX3
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.91 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.234 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 122.405α = 90
b = 80.012β = 91.06
c = 47.827γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesU19AI109764

Revision History  (Full details and data files)

  • Version 1.0: 2018-03-28
    Type: Initial release
  • Version 1.1: 2018-04-11
    Changes: Data collection, Database references
  • Version 1.2: 2018-04-18
    Changes: Data collection, Database references
  • Version 1.3: 2019-12-11
    Changes: Author supporting evidence