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8VA1

S. aureus TarL H300N in complex with CDP-ribitol (single tetramer)

Summary for 8VA1
Entry DOI10.2210/pdb8va1/pdb
Related8V33 8V34
EMDB information43083
DescriptorTeichoic acid ribitol-phosphate polymerase TarL, CDP-ribitol (2 entities in total)
Functional Keywordsglycosyltransferase, polymerase, monotopic, amphipathic, transferase
Biological sourceStaphylococcus aureus
Total number of polymer chains4
Total formula weight276192.04
Authors
Li, F.K.K.,Worrall, L.J.,Strynadka, N.C.J. (deposition date: 2023-12-10, release date: 2024-04-03)
Primary citationLi, F.K.K.,Worrall, L.J.,Gale, R.T.,Brown, E.D.,Strynadka, N.C.J.
Cryo-EM analysis of S. aureus TarL, a polymerase in wall teichoic acid biogenesis central to virulence and antibiotic resistance.
Sci Adv, 10:eadj3864-eadj3864, 2024
Cited by
PubMed Abstract: Wall teichoic acid (WTA), a covalent adduct of Gram-positive bacterial cell wall peptidoglycan, contributes directly to virulence and antibiotic resistance in pathogenic species. Polymerization of the WTA ribitol-phosphate chain is catalyzed by TarL, a member of the largely uncharacterized TagF-like family of membrane-associated enzymes. We report the cryo-electron microscopy structure of TarL, showing a tetramer that forms an extensive membrane-binding platform of monotopic helices. TarL is composed of an amino-terminal immunoglobulin-like domain and a carboxyl-terminal glycosyltransferase-B domain for ribitol-phosphate polymerization. The active site of the latter is complexed to donor substrate cytidine diphosphate-ribitol, providing mechanistic insights into the catalyzed phosphotransfer reaction. Furthermore, the active site is surrounded by electropositive residues that serve to retain the lipid-linked acceptor for polymerization. Our data advance general insight into the architecture and membrane association of the still poorly characterized monotopic membrane protein class and present molecular details of ribitol-phosphate polymerization that may aid in the design of new antimicrobials.
PubMed: 38416829
DOI: 10.1126/sciadv.adj3864
PDB entries with the same primary citation
Experimental method
ELECTRON MICROSCOPY (3.4 Å)
Structure validation

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