Now, the problem is a double stranded DNA molecule wants to naturally exist as a double strand because that is a stabilizing form. So to actually unwind our molecule, our cell must use special types of proteins, special types of enzymes known as the helicase enzyme. So our helicase binds to a location on our double stranded DNA known as the origin of replication. And it basically acts to unwind our double stranded DNA. And since the two strands of DNA naturally want to reform those hydrogen bonds because that forms a stabilizing effect, we have a different set of proteins of enzymes known as single stranded binding proteins or simply SSB proteins that also have to bind to the individual unwound single stranded DNA molecules. And once they bind, they stabilize those molecules and keep those DNA molecules apart.