<s>[INST] ### Understand Prokaryotic DNA Replication - Initiation
For prokaryotic DNA replication, we can initialize the process by using consensus sequence, OriC. OriC is a 245-bp region in E. coli which contains binding sites for the DnaA protein. DnaA binds to DnaA boxes in the OriC region in a process known as binding--melting transition. The binding of DnaA protein unwinds the OriC region and opens it up for replication to begin.
The main function of the DnaB helicase is to unwind dsDNA and the main function of the DnaG primase is to add primer RNA to the dsDNA. DnaB helicase moves in the 5' to 3' direction on the leading strand, while DnaB helicase moves in the 5' to 3' direction on the lagging strand.

DnaB helicase, however, is unable to unwind dsDNA, if there is no single strand binding protein (SSBP) present. SSBP immobilizes the ssDNA by coating the ssDNA and preventing secondary structure formation.

DnaG primase adds RNA primers to the 3'-OH of the ssDNA, while the RNA primers are complementary to the template strand.

The DNA synthesis will proceed by the action of DNA polymerase and DNA ligase.
To answer the following question:

What is the main function of the DnaG primase enzyme during the initiation process of DNA replication?[/INST]