Antibiotics

Cefatrizine is a broad-spectrum antibiotic, which is a semisynthetic cephalosporin derived from cephalosporin C, a natural product originating from the fungus Acremonium chrysogenum. It exerts its mode of action through the inhibition of bacterial cell wall synthesis, a critical component for bacterial growth and replication. Specifically, cefatrizine targets and binds to penicillin-binding proteins (PBPs) located inside the bacterial cell wall, leading to the inhibition of peptidoglycan synthesis. This disruption results in cell lysis and ultimately bacterial cell death.

Piericidin A is a microbial metabolite, specifically a type of polyketide, which is derived from the bacterium of the genus Streptomyces. This compound acts as an electron transport chain inhibitor by specifically binding to the ubiquinone binding site of complex I (NADH:ubiquinone oxidoreductase) in mitochondria. This mode of action results in the disruption of ATP production through oxidative phosphorylation.

Pazufloxacin is an antibacterial agent, which is a synthetic derivative originating from the fluoroquinolone class of compounds. This source categorizes it alongside a group of broad-spectrum antibiotics known for their efficacy against a wide variety of bacterial pathogens. The mode of action of pazufloxacin involves the inhibition of bacterial DNA gyrase and topoisomerase IV. These are essential enzymes for bacterial DNA replication, transcription, repair, and recombination processes. By inhibiting these enzymes, pazufloxacin disrupts the bacterial DNA processes, ultimately leading to cell death.

Cephamycin C is a cephalosporin antibiotic, which is a type of β-lactam antibiotic. It is derived from the fermentation process of certain Streptomyces species and other actinomycetes. Its mode of action involves inhibiting bacterial cell wall synthesis by binding to penicillin-binding proteins (PBPs). This inhibition disrupts the structural integrity of the bacterial cell wall, leading to cell lysis and death.