Staphylococcus aureus cell surface and cytoplasmic membrane

The Staphylococcus aureus cell surface and cytoplasmic membrane represent a complex structural and functional assembly essential for bacterial survival, pathogenesis, and environmental adaptation. The cytoplasmic membrane is a lipid bilayer that hosts vital processes such as respiration, lipid synthesis, and the transport of ions and nutrients (Ernst & Peschel, 2011). Surrounding this is the cell wall, characterized by a thick layer of peptidoglycan and teichoic acids, which provides structural rigidity and serves as an anchor for numerous surface receptors known as Microbial Surface Components Recognizing Adhesive Matrix Molecules (MSCRAMMs) (Foster et al., 2014). These surface receptors are critical for host tissue colonization and immune evasion, making them significant factors in infections ranging from minor skin abscesses to life-threatening systemic conditions like sepsis and endocarditis (Foster et al., 2014). Therapeutically, this region is targeted by various antibiotics; for instance, daptomycin acts by inserting into the cytoplasmic membrane to cause rapid depolarization, while lipoglycopeptides like telavancin interfere with cell wall synthesis while also disrupting membrane potential (Heidary et al., 2022). However, the emergence of resistance mechanisms, such as membrane charge modification, poses a significant challenge to the continued efficacy of these agents (Miller et al., 2016).

Other names

Staphylococcus aureus cell envelopeStaphylococcal cytoplasmic membraneS. aureus surface receptorsStaphylococcal cell wall-associated receptors

Inhibition of cell wall synthesis, disruption of membrane integrity, and depolarization of the cytoplasmic membrane (Heidary et al., 2022; Foster et al., 2014).