Biological Assembly 1  

 3D View: Structure

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 16.38 kDa 
• Atom Count: 1150 
• Residue Count: 150 
• Unique protein chains: 1

5O7J

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

• DOI: 10.2210/pdb5O7J/pdb
• BMRB: 26840

• Classification: SIGNALING PROTEIN
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2017-06-09 Released: 2018-02-07 
• Deposition Author(s): Ali-Ahmad, A., Bornet, O., Fadel, F., Bourne, Y., Vincent, F., Guerlesquin, F., Sebban-Kreuzer, C.
• Funding Organization(s): French National Research Agency

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Experimental Data Snapshot

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

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

• PubMed: 28900144 
• DOI: 10.1038/s41598-017-11361-3
• Structures With Same Primary Citation


• 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, 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.

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Organizational Affiliation: 

CNRS, Aix Marseille Univ, AFMB, Marseille, France. [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Histidine kinase	A	150	Pseudomonas aeruginosa	Mutation(s): 0  Gene Names: gacS, PAMH19_4268 EC: 2.7.13.3
Find proteins for A0A0A8RMX6 (Pseudomonas aeruginosa) Go to UniProtKB:  A0A0A8RMX6

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

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-06-09 
• Released Date: 2018-02-07 
Deposition Author(s): Ali-Ahmad, A., Bornet, O., Fadel, F., Bourne, Y., Vincent, F., Guerlesquin, F., Sebban-Kreuzer, C.

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Funding Organization	Location	Grant Number
French National Research Agency	France	--

Revision History 

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