Antibiotic

Antimicrobial substance active against bacteria. Target the bacterial cell wall (penicillins and cephalosporins) or the cell membrane (polymyxins), or interfere with essential bacterial enzymes (rifamycins, lipiarmycins, quinolones, and sulfonamides) have bactericidal activities. Protein synthesis inhibitors (macrolides, lincosamides, and tetracyclines) are usually bacteriostatic (with the exception of bactericidal aminoglycosides). Some alpha\/beta hydrolases are involved in the biosynthesis or the activation or hydrolysis of these compounds