4ZN2

Glycosyl hydrolase from Pseudomonas aeruginosa

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report



Literature

PslG, a self-produced glycosyl hydrolase, triggers biofilm disassembly by disrupting exopolysaccharide matrix

Yu, S., Su, T., Wu, H., Liu, S., Wang, D., Zhao, T., Jin, Z., Du, W., Zhu, M.J., Chua, S.L., Yang, L., Zhu, D., Gu, L., Ma, L.Z.

(2015) Cell Res 25: 1352-1367

  • DOI: 10.1038/cr.2015.129
  • Primary Citation of Related Structures:  
    4ZN2

  • PubMed Abstract: 

    • Biofilms are surface-associated communities of microorganism embedded in extracellular matrix. Exopolysaccharide is a critical component in the extracellular matrix that maintains biofilm architecture and protects resident biofilm bacteria from antim ...

    Biofilms are surface-associated communities of microorganism embedded in extracellular matrix. Exopolysaccharide is a critical component in the extracellular matrix that maintains biofilm architecture and protects resident biofilm bacteria from antimicrobials and host immune attack. However, self-produced factors that target the matrix exopolysaccharides, are still poorly understood. Here, we show that PslG, a protein involved in the synthesis of a key biofilm matrix exopolysaccharide Psl in Pseudomonas aeruginosa, prevents biofilm formation and disassembles existing biofilms within minutes at nanomolar concentrations when supplied exogenously. The crystal structure of PslG indicates the typical features of an endoglycosidase. PslG mainly disrupts the Psl matrix to disperse bacteria from biofilms. PslG treatment markedly enhances biofilm sensitivity to antibiotics and macrophage cells, resulting in improved biofilm clearance in a mouse implant infection model. Furthermore, PslG shows biofilm inhibition and disassembly activity against a wide range of Pseudomonas species, indicating its great potential in combating biofilm-related complications.

    Organizational Affiliation: 

    State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PslGA, B, C, D416Pseudomonas aeruginosa PAO1Mutation(s): 0 
Gene Names: pslG, PA2237
Find proteins for Q9I1N2 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1))
Explore Q9I1N2 
Go to UniProtKB:  Q9I1N2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.559α = 90
b = 88.206β = 96.92
c = 222.394γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata reduction
HKL-2000data scaling
SOLVEphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

  • Deposited Date: 2015-05-04 
  • Released Date: 2016-01-06 
    • Deposition Author(s): Su, T., Liu, S., Gu, L.
Funding OrganizationLocationGrant Number
National Basic Research Program of China (973 Program)China2015CB150600

Revision History 

  • Version 1.0: 2016-01-06
    Type: Initial release