Definition: A unique DNA sequence of a replicon at which DNA REPLICATION is initiated and proceeds bidirectionally or unidirectionally. It contains the sites where the first separation of the complementary strands occurs, a primer RNA is synthesized, and the switch from primer RNA to DNA synthesis takes place. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
Other names ori Regions; Replication Origins; Regions, ori; Region, ori; Origins, Replication; Origin, Replication; ori Region; Origin of Replication
