DNA polymerase III (bacterial) (null)

DNA synthesis in bacteria refers to the process of chromosomal DNA replication, fundamental for bacterial cell division and survival. This process is executed by a multi-protein complex called the replisome, with DNA polymerase III as the central enzyme responsible for catalyzing the addition of deoxyribonucleotides to a growing DNA strand, using an existing strand as a template. DNA polymerase III is highly processive and accurate, with supporting proteins for initiation, strand separation (helicase), primer synthesis (primase), and topological control (DNA gyrase and topoisomerases). The inhibition of key proteins involved in DNA synthesis is a validated antibacterial strategy, although DNA polymerase III itself is not directly targeted by any clinical antibiotics due to selectivity challenges. Disruption of this machinery, or its auxiliary proteins, arrests bacterial proliferation, making components of the replisome attractive but technically challenging antibiotic targets[2][4][6][8].

Other names

DNA replication machinery (bacterial)Bacterial replisomeDNA polymerase III holoenzymePol IIIBacterial DNA replicase

Inhibition of DNA supercoiling and/or topoisomerase activity (prevents replication fork progression) Induction of DNA strand breaks Inhibition of associated proteins required for replisome formation and activity