8JU9

Molecular mechanism of the one-component regulator RccR on bacterial metabolism and virulence


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Molecular mechanism of the one-component regulator RccR on bacterial metabolism and virulence.

Zhu, Y.Mou, X.Song, Y.Zhang, Q.Sun, B.Liu, H.Tang, H.Bao, R.

(2024) Nucleic Acids Res 52: 3433-3449

  • DOI: https://doi.org/10.1093/nar/gkae171
  • Primary Citation of Related Structures:  
    8JU9

  • PubMed Abstract: 

    The regulation of carbon metabolism and virulence is critical for the rapid adaptation of pathogenic bacteria to host conditions. In Pseudomonas aeruginosa, RccR is a transcriptional regulator of genes involved in primary carbon metabolism and is associated with bacterial resistance and virulence, although the exact mechanism is unclear. Our study demonstrates that PaRccR is a direct repressor of the transcriptional regulator genes mvaU and algU. Biochemical and structural analyses reveal that PaRccR can switch its DNA recognition mode through conformational changes triggered by KDPG binding or release. Mutagenesis and functional analysis underscore the significance of allosteric communication between the SIS domain and the DBD domain. Our findings suggest that, despite its overall structural similarity to other bacterial RpiR-type regulators, RccR displays a more complex regulatory element binding mode induced by ligands and a unique regulatory mechanism.


  • Organizational Affiliation

    Center of Infectious Diseases, Division of Infectious Diseases in State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Probable transcriptional regulator280Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: PA5438
UniProt
Find proteins for Q9HTC8 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9HTC8 
Go to UniProtKB:  Q9HTC8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HTC8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.176 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.319α = 90
b = 82.855β = 90
c = 138.622γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science Foundation (NSF, China)China81871615

Revision History  (Full details and data files)

  • Version 1.0: 2024-01-17
    Type: Initial release
  • Version 1.1: 2024-05-22
    Changes: Database references