5O7J

Structural insights into the periplasmic sensor domain of the GacS histidine kinase controlling biofilm formation in Pseudomonas aeruginosa


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural and functional insights into the periplasmic detector domain of the GacS histidine kinase controlling biofilm formation in Pseudomonas aeruginosa.

Ali-Ahmad, A.Fadel, F.Sebban-Kreuzer, C.Ba, M.Pelissier, G.D.Bornet, O.Guerlesquin, F.Bourne, Y.Bordi, C.Vincent, F.

(2017) Sci Rep 7: 11262-11262

  • DOI: 10.1038/s41598-017-11361-3
  • Primary Citation of Related Structures:  
    5O7J

  • PubMed Abstract: 
  • Pseudomonas aeruginosa is an opportunistic pathogenic bacterium responsible for both acute and chronic infections and has developed resistance mechanisms due to its ability to promote biofilm formation and evade host adaptive immune responses. Here, ...

    Pseudomonas aeruginosa is an opportunistic pathogenic bacterium responsible for both acute and chronic infections and has developed resistance mechanisms due to its ability to promote biofilm formation and evade host adaptive immune responses. Here, we investigate the functional role of the periplasmic detector domain (GacS PD ) from the membrane-bound GacS histidine kinase, which is one of the key players for biofilm formation and coordination of bacterial lifestyles. A gacS mutant devoid of the periplasmic detector domain is severely defective in biofilm formation. Functional assays indicate that this effect is accompanied by concomitant changes in the expression of the two RsmY/Z small RNAs that control activation of GacA-regulated genes. The solution NMR structure of GacS PD reveals a distinct PDC/PAS α/β fold characterized by a three-stranded β-sheet flanked by α-helices and an atypical major loop. Point mutations in a putative ligand binding pocket lined by positively-charged residues originating primarily from the major loop impaired biofilm formation. These results demonstrate the functional role of GacS PD , evidence critical residues involved in GacS/GacA signal transduction system that regulates biofilm formation, and document the evolutionary diversity of the PDC/PAS domain fold in bacteria.


    Organizational Affiliation

    CNRS, Aix Marseille Univ, AFMB, Marseille, France. florence.vincent@afmb.univ-mrs.fr.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histidine kinaseA150Pseudomonas aeruginosaMutation(s): 0 
Gene Names: gacSPAMH19_4268
EC: 2.7.13.3
Find proteins for G3XD98 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore G3XD98 
Go to UniProtKB:  G3XD98
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 
  • OLDERADO: 5O7J Olderado

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFrance--

Revision History 

  • Version 1.0: 2018-02-07
    Type: Initial release
  • Version 1.1: 2019-05-08
    Changes: Data collection