#Id: 5060
#Unit 3. Fundamental Processes
Input of energy in the form of ATP is required at several stages for the prepriming reaction, and it is required for unwinding DNA.
The helicase action of DnaB depends on ATP hydrolysis, and the swivel action of gyrase requires ATP hydrolysis.
ATP also is needed for the action of primase and to load the b subunit of Pol III in order to initiate DNA synthesis.
