5TZJ

Crystal structure of S. aureus TarS 1-349 in complex with UDP-GlcNAc


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and Mechanism of Staphylococcus aureus TarS, the Wall Teichoic Acid beta-glycosyltransferase Involved in Methicillin Resistance.

Sobhanifar, S.Worrall, L.J.King, D.T.Wasney, G.A.Baumann, L.Gale, R.T.Nosella, M.Brown, E.D.Withers, S.G.Strynadka, N.C.

(2016) PLoS Pathog. 12: e1006067-e1006067

  • DOI: 10.1371/journal.ppat.1006067
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In recent years, there has been a growing interest in teichoic acids as targets for antibiotic drug design against major clinical pathogens such as Staphylococcus aureus, reflecting the disquieting increase in antibiotic resistance and the historical ...

    In recent years, there has been a growing interest in teichoic acids as targets for antibiotic drug design against major clinical pathogens such as Staphylococcus aureus, reflecting the disquieting increase in antibiotic resistance and the historical success of bacterial cell wall components as drug targets. It is now becoming clear that β-O-GlcNAcylation of S. aureus wall teichoic acids plays a major role in both pathogenicity and antibiotic resistance. Here we present the first structure of S. aureus TarS, the enzyme responsible for polyribitol phosphate β-O-GlcNAcylation. Using a divide and conquer strategy, we obtained crystal structures of various TarS constructs, mapping high resolution overlapping N-terminal and C-terminal structures onto a lower resolution full-length structure that resulted in a high resolution view of the entire enzyme. Using the N-terminal structure that encapsulates the catalytic domain, we furthermore captured several snapshots of TarS, including the native structure, the UDP-GlcNAc donor complex, and the UDP product complex. These structures along with structure-guided mutants allowed us to elucidate various catalytic features and identify key active site residues and catalytic loop rearrangements that provide a valuable platform for anti-MRSA drug design. We furthermore observed for the first time the presence of a trimerization domain composed of stacked carbohydrate binding modules, commonly observed in starch active enzymes, but adapted here for a poly sugar-phosphate glycosyltransferase.


    Organizational Affiliation

    Department of Biochemistry and Center for Blood Research, University of British Columbia, Vancouver, British Columbia, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Glycosyl transferase
C, A
368Staphylococcus aureus (strain Mu50 / ATCC 700699)Mutation(s): 0 
Gene Names: tarS
EC: 2.4.1.355
Find proteins for A0A0H3JPC6 (Staphylococcus aureus (strain Mu50 / ATCC 700699))
Go to UniProtKB:  A0A0H3JPC6
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
UD1
Query on UD1

Download SDF File 
Download CCD File 
A, C
URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
C17 H27 N3 O17 P2
LFTYTUAZOPRMMI-CFRASDGPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.189 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 57.002α = 83.03
b = 57.370β = 84.55
c = 86.786γ = 62.26
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
Aimlessdata scaling
xia2data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-01-04
    Type: Initial release
  • Version 1.1: 2017-11-01
    Type: Author supporting evidence