5Z50

Crystal structure of PaCysB regulatory domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular insights into the master regulator CysB-mediated bacterial virulence in Pseudomonas aeruginosa.

Song, Y.Yang, C.Chen, G.Zhang, Y.Seng, Z.Cai, Z.Zhang, C.Yang, L.Gan, J.Liang, H.

(2019) Mol Microbiol 111: 1195-1210

  • DOI: https://doi.org/10.1111/mmi.14200
  • Primary Citation of Related Structures:  
    5Z4Y, 5Z4Z, 5Z50

  • PubMed Abstract: 

    Pseudomonas aeruginosa is a major pathogen that causes serious acute and chronic infections in humans. The type III secretion system (T3SS) is an important virulence factor that plays essential roles in acute infections. However, the regulatory mechanisms of T3SS are not fully understood. In this study, we found that the deletion of cysB reduced the T3SS gene expression and swarming motility but enhanced biofilm formation. In a mouse acute pneumonia model, mutation of cysB decreased the average bacterial load compared to that of the wild-type strain. Further experiments demonstrated that CysB contributed to the reduced T3SS gene expression and bacterial pathogenesis by directly regulating the sensor kinase RetS. We also performed crystallographic studies of PaCysB. The overall fold of PaCysB NTD domain is similar to other LysR superfamily proteins and structural superposition revealed one possible DNA-binding model for PaCysB. Structural comparison also revealed great flexibility of the PaCysB RD domain, which may play an important role in bending and transcriptional regulation of target DNA. Taken together, these results expand our current understanding of the complex regulatory networks of T3SS and RetS pathways. The crystal structure of CysB provides new insights for studying the function of its homologs in other bacterial species.


  • Organizational Affiliation

    Key Laboratory of Resources Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, Shaanxi, 710069, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Cys regulon transcriptional activator
A, B
237Pseudomonas aeruginosaMutation(s): 0 
UniProt
Find proteins for O05926 (Pseudomonas aeruginosa)
Explore O05926 
Go to UniProtKB:  O05926
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO05926
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
C [auth A]
D [auth A]
E [auth A]
F [auth A]
G [auth A]
C [auth A],
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth B],
I [auth B],
J [auth B],
K [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL
Query on GOL

Download Ideal Coordinates CCD File 
L [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.21 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.718α = 90
b = 65.718β = 90
c = 259.38γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-3000data reduction
HKL-3000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Key Research and Development Project of ChinaChina2016YFA0500600
National Natural Science Foundation of ChinaChina31370728

Revision History  (Full details and data files)

  • Version 1.0: 2019-01-23
    Type: Initial release
  • Version 1.1: 2019-08-14
    Changes: Data collection, Database references
  • Version 1.2: 2023-11-22
    Changes: Data collection, Database references, Refinement description