Aminoglycosides (like gentamycin) are bactericidal via irreversible inhibition of the initiation comblex by binding the 30S subunit [FA2020 p191]

• Amoxicillin is a beta-lactam antibiotic which works by binding and inhibiting penicillin-binding proteins (transpeptidases) and block cross-linking in the cell wall [p187]
• Ciprofloxacin is a bactericidal fluoroquinolone which acts by inhibiting DNA gyrase (topoisomerase II) and topoisomerase IV [p195]
• Erythromycin is a macrolide (the macrolides are ACE - azithromycin, clarithromycin, and erythromycin) which acts by inhibiting protein synthesis via bindind to the 50S subunit and preventing translocation (macroslides) [p193]
• Sulfamethoxazole is a sulfonamide which acts by inhibiting dihydropteroate synthase therfore inhibiting folate synthesis [p194]