Wall teichoic acid precursor Lipid III (Lipid III WTA)

Lipid III WTA refers to Lipid III of the wall teichoic acid biosynthetic pathway, a membrane-associated bacterial cell envelope precursor rather than a human receptor or enzyme. Wall teichoic acids are major anionic glycopolymers of Gram-positive bacteria, covalently linked to peptidoglycan, and they contribute to cell division, surface adhesion, biofilm formation, antimicrobial resistance, and virulence. Review and pathway sources describe wall teichoic acid biosynthesis as an attractive antibacterial vulnerability because these polymers are important for bacterial fitness and pathogenicity. ([academic.oup.com](https://academic.oup.com/femsre/article/45/4/fuaa064/6019871))\n\nThe specific molecule called Lipid III has been defined as undecaprenyl-PP-GlcNAc, a precursor to wall teichoic acid. CARD classifies Lipid III as an antibiotic target and notes that inhibiting it can be lethal because teichoic acid is needed for proper control of peptidoglycan hydrolysis. Known antibiotics reported to engage this precursor include teixobactin and clovibactin; clovibactin was specifically described as binding the pyrophosphate of multiple essential cell wall precursors including Lipid III WTA. Because this entity is a bacterial metabolite/intermediate rather than a classical protein drug target, biomarker strategies are limited and mostly microbiologic, such as organism identification and susceptibility testing rather than host-based patient selection. Overall, \"Lipid IIIWTA\" appears to be a compacted spelling of a real antibacterial target concept, best normalized to \"Wall teichoic acid precursor Lipid III\" with abbreviation \"Lipid III WTA.\" ([card.mcmaster.ca](https://card.mcmaster.ca/ontology/39816))

Other names

Lipid IIIWall teichoic acid Lipid IIIWTA Lipid IIIUndecaprenyl-PP-GlcNAcUndecaprenyl pyrophosphate N-acetylglucosamine

Antibacterial agents reported to interact with Lipid III WTA bind the conserved pyrophosphate-containing, lipid-linked cell wall precursor and thereby inhibit wall teichoic acid and broader cell envelope biosynthesis in Gram-positive bacteria. Teixobactin has been curated as targeting Lipid III in antibiotic-resistance ontology resources, and clovibactin was reported to bind the pyrophosphate of multiple essential precursors including Lipid III WTA, blocking cell wall synthesis. ([card.mcmaster.ca](https://card.mcmaster.ca/ontology/39816))