Crystal structure of B. subtilis TagT

Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.233 

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This is version 1.3 of the entry. See complete history


Crystallographic analysis ofStaphylococcus aureusLcpA, the primary wall teichoic acid ligase.

Li, F.K.K.Rosell, F.I.Gale, R.T.Simorre, J.P.Brown, E.D.Strynadka, N.C.J.

(2020) J Biol Chem 295: 2629-2639

  • DOI: https://doi.org/10.1074/jbc.RA119.011469
  • Primary Citation of Related Structures:  
    6UEX, 6UF3, 6UF5, 6UF6

  • PubMed Abstract: 

    Gram-positive bacteria, including major clinical pathogens such as Staphylococcus aureus , are becoming increasingly drug-resistant. Their cell walls are composed of a thick layer of peptidoglycan (PG) modified by the attachment of wall teichoic acid (WTA), an anionic glycopolymer that is linked to pathogenicity and regulation of cell division and PG synthesis. The transfer of WTA from lipid carriers to PG, catalyzed by the LytR-CpsA-Psr (LCP) enzyme family, offers a unique extracellular target for the development of new anti-infective agents. Inhibitors of LCP enzymes have the potential to manage a wide range of bacterial infections because the target enzymes are implicated in the assembly of many other bacterial cell wall polymers, including capsular polysaccharide of streptococcal species and arabinogalactan of mycobacterial species. In this study, we present the first crystal structure of S. aureus LcpA with bound substrate at 1.9 Å resolution and those of Bacillus subtilis LCP enzymes, TagT, TagU, and TagV, in the apo form at 1.6-2.8 Å resolution. The structures of these WTA transferases provide new insight into the binding of lipid-linked WTA and enable assignment of the catalytic roles of conserved active-site residues. Furthermore, we identified potential subsites for binding the saccharide core of PG using computational docking experiments, and multiangle light-scattering experiments disclosed novel oligomeric states of the LCP enzymes. The crystal structures and modeled substrate-bound complexes of the LCP enzymes reported here provide insights into key features linked to substrate binding and catalysis and may aid the structure-guided design of specific LCP inhibitors.

  • Organizational Affiliation

    Department of Biochemistry and Biomedical Sciences, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario L8S 4L8, Canada.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Polyisoprenyl-teichoic acid--peptidoglycan teichoic acid transferase TagT304Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: tagTywtFBSU35840
EC: 2.7.8
Find proteins for Q7WY78 (Bacillus subtilis (strain 168))
Explore Q7WY78 
Go to UniProtKB:  Q7WY78
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7WY78
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.233 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.656α = 90
b = 65.656β = 90
c = 143.07γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)Canada--
Howard Hughes Medical Institute (HHMI)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-29
    Type: Initial release
  • Version 1.1: 2020-02-05
    Changes: Database references
  • Version 1.2: 2020-03-11
    Changes: Database references
  • Version 1.3: 2023-10-11
    Changes: Data collection, Database references, Refinement description