Bacterial enzymes and ribosomes

Bacterial enzymes and ribosomes represent a diverse set of essential biological targets found in prokaryotic organisms that are fundamental for their survival, growth, and reproduction. The bacterial ribosome (70S), composed of the 30S and 50S subunits, is the site of protein synthesis and is a primary target for several classes of antibiotics that exploit its structural differences from the eukaryotic 80S ribosome to achieve selective toxicity. Concurrently, bacterial enzymes such as DNA gyrase, RNA polymerase, and penicillin-binding proteins facilitate critical processes including DNA supercoiling, transcription, and peptidoglycan layer assembly. Drugs targeting these components—collectively known as antibiotics—interrupt these vital pathways to treat bacterial infections. However, the efficacy of targeting these molecules is increasingly compromised by the development of resistance mechanisms, such as target modification, enzymatic inactivation, and efflux pumps, which remain a significant challenge in clinical medicine.

Other names

Prokaryotic translational machineryBacterial metabolic enzymes70S ribosomeProkaryotic enzymes

Inhibition of the 30S or 50S ribosomal subunits to block translation; inhibition of DNA gyrase or topoisomerase IV to prevent DNA replication; inhibition of penicillin-binding proteins to disrupt cell wall synthesis; inhibition of dihydropteroate synthase to block folate metabolism.