Crystal structure of the MinD-like ATPase FlhG

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 

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MinD-like ATPase FlhG effects location and number of bacterial flagella during C-ring assembly.

Schuhmacher, J.S.Rossmann, F.Dempwolff, F.Knauer, C.Altegoer, F.Steinchen, W.Dorrich, A.K.Klingl, A.Stephan, M.Linne, U.Thormann, K.M.Bange, G.

(2015) Proc Natl Acad Sci U S A 112: 3092-3097

  • DOI: https://doi.org/10.1073/pnas.1419388112
  • Primary Citation of Related Structures:  
    4RZ2, 4RZ3

  • PubMed Abstract: 

    The number and location of flagella, bacterial organelles of locomotion, are species specific and appear in regular patterns that represent one of the earliest taxonomic criteria in microbiology. However, the mechanisms that reproducibly establish these patterns during each round of cell division are poorly understood. FlhG (previously YlxH) is a major determinant for a variety of flagellation patterns. Here, we show that FlhG is a structural homolog of the ATPase MinD, which serves in cell-division site determination. Like MinD, FlhG forms homodimers that are dependent on ATP and lipids. It interacts with a complex of the flagellar C-ring proteins FliM and FliY (also FliN) in the Gram-positive, peritrichous-flagellated Bacillus subtilis and the Gram-negative, polar-flagellated Shewanella putrefaciens. FlhG interacts with FliM/FliY in a nucleotide-independent manner and activates FliM/FliY to assemble with the C-ring protein FliG in vitro. FlhG-driven assembly of the FliM/FliY/FliG complex is strongly enhanced by ATP and lipids. The protein shows a highly dynamic subcellular distribution between cytoplasm and flagellar basal bodies, suggesting that FlhG effects flagellar location and number during assembly of the C-ring. We describe the molecular evolution of a MinD-like ATPase into a flagellation pattern effector and suggest that the underappreciated structural diversity of the C-ring proteins might contribute to the formation of different flagellation patterns.

  • Organizational Affiliation

    LOEWE Center for Synthetic Microbiology (Synmikro) and Department of Chemistry, Philipps University Marburg, 35043 Marburg, Germany;

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Site-determining protein
A, B
295Geobacillus thermodenitrificans NG80-2Mutation(s): 1 
Gene Names: GTNG_1094
Find proteins for A4IMB4 (Geobacillus thermodenitrificans (strain NG80-2))
Explore A4IMB4 
Go to UniProtKB:  A4IMB4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA4IMB4
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.221 
  • R-Value Observed: 0.223 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.25α = 90
b = 72.56β = 93.73
c = 65.62γ = 90
Software Package:
Software NamePurpose
DNAdata collection
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-03-04
    Type: Initial release
  • Version 1.1: 2015-04-22
    Changes: Database references
  • Version 1.2: 2023-09-20
    Changes: Data collection, Database references, Derived calculations, Refinement description