4TQX

Molecular Basis of Streptococcus mutans Sortase A Inhibition by Chalcone.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.37 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 

wwPDB Validation   3D Report Full Report


This is version 2.1 of the entry. See complete history


Literature

Molecular basis of Streptococcus mutans sortase A inhibition by the flavonoid natural product trans-chalcone.

Wallock-Richards, D.J.Marles-Wright, J.Clarke, D.J.Maitra, A.Dodds, M.Hanley, B.Campopiano, D.J.

(2015) Chem Commun (Camb) 51: 10483-10485

  • DOI: https://doi.org/10.1039/c5cc01816a
  • Primary Citation of Related Structures:  
    4TQX

  • PubMed Abstract: 

    Sortase A (SrtA) from Gram positive pathogens is an attractive target for inhibitors due to its role in the attachment of surface proteins to the cell wall. We found that the plant natural product trans-chalcone inhibits Streptococcus mutans SrtA in vitro and also inhibited S. mutans biofilm formation. Mass spectrometry revealed that the trans-chalcone forms a Michael addition adduct with the active site cysteine. The X-ray crystal structure of the SrtA H139A mutant provided new insights into substrate recognition by the sortase family. Our study suggests that chalcone flavonoids have potential as sortase-specific oral biofilm inhibitors.


  • Organizational Affiliation

    EastChem School of Chemistry, The University of Edinburgh, David Brewster Road, Edinburgh, EH9 3FJ, UK. Dominic.Campopiano@ed.ac.uk.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Sortase206Streptococcus mutansMutation(s): 1 
Gene Names: srtA
UniProt
Find proteins for Q8CM62 (Streptococcus mutans)
Explore Q8CM62 
Go to UniProtKB:  Q8CM62
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8CM62
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.37 Å
  • R-Value Free: 0.179 
  • R-Value Work: 0.145 
  • R-Value Observed: 0.147 
  • Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.822α = 90
b = 82.822β = 90
c = 57.87γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/I013687/1

Revision History  (Full details and data files)

  • Version 1.0: 2015-05-20
    Type: Initial release
  • Version 1.1: 2015-06-17
    Changes: Database references
  • Version 1.2: 2015-07-01
    Changes: Database references
  • Version 2.0: 2017-08-30
    Changes: Advisory, Atomic model, Author supporting evidence, Derived calculations
  • Version 2.1: 2023-12-20
    Changes: Data collection, Database references, Refinement description