DNA replication and cell division machinery (null)

The "DNA replication and cell division machinery" comprises the essential enzymes, protein complexes, and structural/regulatory proteins that coordinate the copying of the DNA genome and physically dividing a parent cell into two genetically identical daughter cells. Key proteins include DNA polymerases (catalyze DNA strand synthesis), helicases (unwind double-stranded DNA), primases (synthesize RNA primers), topoisomerases (resolve supercoiling and tangles), ligases (seal DNA fragments), and many protein complexes that regulate timing, accuracy, and spatial coordination of these processes—such as the replisome and the origin recognition complex. Cell division requires additional cytoskeletal and membrane remodeling proteins. Aberrant regulation or mutation in any component can lead to diseases such as cancer, making many aspects of this machinery validated targets for existing chemotherapies as well as new anti-cancer and anti-infective therapeutics[1][2][4][5][6][7][8].

Other names

DNA synthesis machineryreplisomereplication machinerycell division apparatuscell cycle machineryDNA replication complex

Inhibition of DNA polymerase blocks DNA chain elongation Inhibition of topoisomerases causes DNA strand breaks and apoptosis Microtubule inhibitors prevent proper chromosome segregation during mitosis CDK inhibitors arrest cell cycle progression, often at G1/S or G2/M phase