Staphylococcus aureus is a gram-positive bacterium that causes (hospital acquired) infections to the skin, respiration and bloodstream [1]. The peptidoglycan of S. aureus is highly functionalized with anionic polymers, called wall teichoic acids (WTAs). These polymers consist of polyribitol phosphates (RboP) and they are modified with D-alanine and/or a- and ss-N-acetyl glucosamine (GlcNAc) residues. WTAs are involved in cell shape, cell division, biofilm formation, phage infectivity, and pathogenesis as well as resistance to cationic antimicrobial peptides [2].
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