6XH9

Crystal structure of S. aureus TarJ


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 

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This is version 1.1 of the entry. See complete history


Literature

Crystallographic analysis of TarI and TarJ, a cytidylyltransferase and reductase pair for CDP-ribitol synthesis in Staphylococcus aureus wall teichoic acid biogenesis.

Li, F.K.K.Gale, R.T.Petrotchenko, E.V.Borchers, C.H.Brown, E.D.Strynadka, N.C.J.

(2021) J Struct Biol 213: 107733-107733

  • DOI: 10.1016/j.jsb.2021.107733
  • Primary Citation of Related Structures:  
    6XH9, 6XHQ, 6XHP, 6XHS, 6XHR, 6XHT, 6XHK

  • PubMed Abstract: 
  • The cell wall of many pathogenic Gram-positive bacteria contains ribitol-phosphate wall teichoic acid (WTA), a polymer that is linked to virulence and regulation of essential physiological processes including cell division. CDP-ribitol, the activated precursor for ribitol-phosphate polymerization, is synthesized by a cytidylyltransferase and reductase pair known as TarI and TarJ, respectively ...

    The cell wall of many pathogenic Gram-positive bacteria contains ribitol-phosphate wall teichoic acid (WTA), a polymer that is linked to virulence and regulation of essential physiological processes including cell division. CDP-ribitol, the activated precursor for ribitol-phosphate polymerization, is synthesized by a cytidylyltransferase and reductase pair known as TarI and TarJ, respectively. In this study, we present crystal structures of Staphylococcus aureus TarI and TarJ in their apo forms and in complex with substrates and products. The TarI structures illustrate the mechanism of CDP-ribitol synthesis from CTP and ribitol-phosphate and reveal structural changes required for substrate binding and catalysis. Insights into the upstream step of ribulose-phosphate reduction to ribitol-phosphate is provided by the structures of TarJ. Furthermore, we propose a general topology of the enzymes in a heterotetrameric form built using restraints from crosslinking mass spectrometry analysis. Together, our data present molecular details of CDP-ribitol production that may aid in the design of inhibitors against WTA biosynthesis.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology and Centre for Blood Research, The University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada. Electronic address: ncjs@mail.ubc.ca.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ribulose-5-phosphate reductase 1A341Staphylococcus aureusMutation(s): 0 
Gene Names: tarJSAOUHSC_00226
EC: 1.1.1.405
UniProt
Find proteins for Q2G1B9 (Staphylococcus aureus (strain NCTC 8325 / PS 47))
Explore Q2G1B9 
Go to UniProtKB:  Q2G1B9
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CME
Query on CME
AL-PEPTIDE LINKINGC5 H11 N O3 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.20 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 
  • Space Group: P 62 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.483α = 90
b = 99.483β = 90
c = 268.428γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
Aimlessdata scaling
PHASERphasing

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)Canada--
Natural Sciences and Engineering Research Council (NSERC, Canada)Canada--

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-21
    Type: Initial release
  • Version 1.1: 2021-05-05
    Changes: Database references