Gosset Bacterial surface receptor Overview
Bacterial surface receptors are a heterogeneous group of transmembrane or outer membrane proteins present on the surface of bacterial cells. These receptors serve as points of interaction for environmental molecules, antibiotics, host factors, and bacteriophages. They are essential for ligand binding, signal transduction, nutrient uptake, bacterial adhesion, and virulence, making them a frequent focus for anti-infective drug development and phage therapy[6][2][1][4][8][9]. A single bacterium expresses multiple surface receptors, each of which may have a distinct role in survival, pathogenesis, or resistance. Therapeutic targeting of these receptors is challenged by their diversity, redundancy, ability to mutate, and conservation across pathogenic and commensal species[4][8][6]. For precise drug development, individual surface molecules (e.g., OmpF porin, CD36, PBPs) should be specified.
Mechanism of Action
Inhibition of cell wall biosynthesis via binding to surface proteins (e.g., PBPs targeted by beta-lactams); Disruption of membrane integrity or pore formation; Direct bacteriolysis (phage binding and injection); Inhibition of nutrient uptake or efflux; Blocking signal transduction pathways required for virulence
Biological Functions
Disease Associations
Safety Considerations
- Poor target specificity when receptors are conserved among commensal bacteria (risk of disrupting the microbiome)
- Rapid resistance via receptor mutation or loss (bacteria often mutate or shed surface proteins under drug pressure)
- Immunogenicity or off-target effects in bacteriophage therapies
Interacting Drugs
Associated Biomarkers
| Biomarker |
|---|
| Expression of specific surface receptors (e.g., porins, efflux pumps, lipoproteins) |
| Antibiotic susceptibility (e.g., loss or modification of surface receptor correlates with resistance/sensitivity) |