Structure of the EAL domain of BifA from Pseudomonas aeruginosa

Experimental Data Snapshot

  • Resolution: 1.90 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


A genetic switch controls Pseudomonas aeruginosa surface colonization.

Manner, C.Dias Teixeira, R.Saha, D.Kaczmarczyk, A.Zemp, R.Wyss, F.Jaeger, T.Laventie, B.J.Boyer, S.Malone, J.G.Qvortrup, K.Andersen, J.B.Givskov, M.Tolker-Nielsen, T.Hiller, S.Drescher, K.Jenal, U.

(2023) Nat Microbiol 8: 1520-1533

  • DOI: https://doi.org/10.1038/s41564-023-01403-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Efficient colonization of mucosal surfaces is essential for opportunistic pathogens like Pseudomonas aeruginosa, but how bacteria collectively and individually adapt to optimize adherence, virulence and dispersal is largely unclear. Here we identified a stochastic genetic switch, hecR-hecE, which is expressed bimodally and generates functionally distinct bacterial subpopulations to balance P. aeruginosa growth and dispersal on surfaces. HecE inhibits the phosphodiesterase BifA and stimulates the diguanylate cyclase WspR to increase c-di-GMP second messenger levels and promote surface colonization in a subpopulation of cells; low-level HecE-expressing cells disperse. The fraction of HecE + cells is tuned by different stress factors and determines the balance between biofilm formation and long-range cell dispersal of surface-grown communities. We also demonstrate that the HecE pathway represents a druggable target to effectively counter P. aeruginosa surface colonization. Exposing such binary states opens up new ways to control mucosal infections by a major human pathogen.

  • Organizational Affiliation

    Biozentrum, University of Basel, Basel, Switzerland.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bifunctional diguanylate cyclase/phosphodiesterase
A, B
275Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: bifAPA4367
Find proteins for Q9HW35 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HW35 
Go to UniProtKB:  Q9HW35
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HW35
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.90 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • Space Group: P 2 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 34.697α = 90
b = 117.503β = 90
c = 117.824γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Swiss National Science FoundationSwitzerland310030_189253

Revision History  (Full details and data files)

  • Version 1.0: 2023-04-12
    Type: Initial release
  • Version 1.1: 2023-06-21
    Changes: Database references
  • Version 1.2: 2023-08-09
    Changes: Database references
  • Version 1.3: 2024-05-01
    Changes: Data collection, Refinement description