Central domain of FleQ H287A mutant in complex with ATPgS and Mg

Experimental Data Snapshot

  • Resolution: 2.25 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

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Sensor I Regulated ATPase Activity of FleQ Is Essential for Motility to Biofilm Transition inPseudomonas aeruginosa.

Banerjee, P.ChanchalJain, D.

(2019) ACS Chem Biol 14: 1515-1527

  • DOI: https://doi.org/10.1021/acschembio.9b00255
  • Primary Citation of Related Structures:  
    6J7E, 6JDI, 6JDL

  • PubMed Abstract: 

    Members of the AAA+ (ATPase associated with various cellular activities) family of ATPases couple chemical energy derived from ATP hydrolysis for generation of mechanical force, resulting in conformational changes. The hydrolysis is brought about by highly conserved domains and motifs. The sensor I motif is critical for sensing and hydrolysis of the nucleotide. Pseudomonas aeruginosa FleQ is an ATPase that is a positive regulator of flagellar gene expression. We have determined the crystal structures of the ATPase domain of wild-type FleQ and sensor I mutants H287N and H287A in complex with ATPγS and Mg 2+ to 2.4, 1.95, and 2.25 Å resolution, respectively. The structural data highlight the role of sensor I in regulating the ATPase activity. The in vitro and in vivo data demonstrate that the moderate ATPase activity of FleQ due to the presence of histidine in sensor I is essential for maintaining the monotrichous phenotype and for the rapid motility to biofilm transition.

  • Organizational Affiliation

    Transcription Regulation Lab , Regional Centre for Biotechnology, NCR Biotech Science Cluster , 3rd Milestone, Faridabad-Gurgaon Expressway , Faridabad 121001 , India.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nitrogen assimilation regulatory protein263Pseudomonas aeruginosaMutation(s): 1 
Gene Names: 
Find proteins for G3XCV0 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore G3XCV0 
Go to UniProtKB:  G3XCV0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupG3XCV0
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 2.25 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.011α = 90
b = 105.011β = 90
c = 43.191γ = 120
Software Package:
Software NamePurpose
iMOSFLMdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Department of Biotechnology (India)India--

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-27
    Type: Initial release
  • Version 1.1: 2023-11-22
    Changes: Data collection, Database references, Refinement description