Gram-positive cell wall anionic polymers (Teichoic acids) (WTA/LTA)

Gram-positive cell wall anionic polymers, primarily wall teichoic acids (WTAs) and lipoteichoic acids (LTAs), are essential glycopolymers that constitute a significant portion of the Gram-positive bacterial cell envelope (Swoboda et al., 2010, PMID: 20039316). WTAs are covalently linked to peptidoglycan, while LTAs are anchored to the cytoplasmic membrane; both are critical for maintaining cell wall integrity, regulating ion homeostasis, and controlling the activity of autolytic enzymes (Brown et al., 2013, PMID: 23384483). These polymers also play a central role in pathogenesis by mediating bacterial adhesion to host tissues and promoting the formation of biofilms (Weidenmaier & Peschel, 2008, PMID: 18354395). Because they are essential for the viability and virulence of major pathogens like Staphylococcus aureus, they are attractive targets for antimicrobial therapy. Drugs such as Teixobactin target WTA precursors, while others like Daptomycin interact with LTAs to disrupt membrane function, and biosynthetic inhibitors like Targocil can restore sensitivity to conventional antibiotics (Ling et al., 2015, PMID: 25561178; Campbell et al., 2011, PMID: 21390154).

Other names

Teichoic acidsWall teichoic acidsLipoteichoic acidsCell wall glycopolymersAnionic cell wall polymers

Inhibition of teichoic acid biosynthesis (e.g., TarO or TarG inhibition), binding to lipid-linked precursors (Lipid III), or disruption of membrane integrity through interaction with lipoteichoic acids (Swoboda et al., 2010, PMID: 20039316; Ling et al., 2015, PMID: 25561178).