5WB4

Crystal structure of the TarA wall teichoic acid glycosyltransferase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.219 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and mechanism of TagA, a novel membrane-associated glycosyltransferase that produces wall teichoic acids in pathogenic bacteria.

Kattke, M.D.Gosschalk, J.E.Martinez, O.E.Kumar, G.Gale, R.T.Cascio, D.Sawaya, M.R.Philips, M.Brown, E.D.Clubb, R.T.

(2019) Plos Pathog. 15: e1007723-e1007723

  • DOI: 10.1371/journal.ppat.1007723
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Staphylococcus aureus and other bacterial pathogens affix wall teichoic acids (WTAs) to their surface. These highly abundant anionic glycopolymers have critical functions in bacterial physiology and their susceptibility to β-lactam antibiotics. The m ...

    Staphylococcus aureus and other bacterial pathogens affix wall teichoic acids (WTAs) to their surface. These highly abundant anionic glycopolymers have critical functions in bacterial physiology and their susceptibility to β-lactam antibiotics. The membrane-associated TagA glycosyltransferase (GT) catalyzes the first-committed step in WTA biosynthesis and is a founding member of the WecB/TagA/CpsF GT family, more than 6,000 enzymes that synthesize a range of extracellular polysaccharides through a poorly understood mechanism. Crystal structures of TagA from T. italicus in its apo- and UDP-bound states reveal a novel GT fold, and coupled with biochemical and cellular data define the mechanism of catalysis. We propose that enzyme activity is regulated by interactions with the bilayer, which trigger a structural change that facilitates proper active site formation and recognition of the enzyme's lipid-linked substrate. These findings inform upon the molecular basis of WecB/TagA/CpsF activity and could guide the development of new anti-microbial drugs.


    Organizational Affiliation

    UCLA-DOE Institute of Genomics and Proteomics, University of California, Los Angeles, Los Angeles, United States of America.,Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, United States of America.,Department of Chemistry and Biomedical Sciences, McMaster University, Hamilton, Ontario, Canada.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N-acetylglucosaminyldiphosphoundecaprenol N-acetyl-beta-D-mannosaminyltransferase
A, B, C, D, E, F, G, H
195Thermoanaerobacter italicus (strain DSM 9252 / Ab9)Mutation(s): 1 
EC: 2.4.1.187
Find proteins for D3T4E0 (Thermoanaerobacter italicus (strain DSM 9252 / Ab9))
Go to UniProtKB:  D3T4E0
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B, C, E, F, G, H
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D, E, F, G, H
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.219 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 77.030α = 90.00
b = 107.790β = 98.29
c = 89.440γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
BUSTERrefinement
PDB_EXTRACTdata extraction
SHELXDEphasing
XSCALEdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2019-01-16
    Type: Initial release
  • Version 1.1: 2019-07-31
    Type: Data collection, Database references