For replication to occur, the helix must first unwind, splitting into ... allowing it to move along the DNA and continue unwinding the double strand. Rather than prying DNA apart in a single ...

Central to this process are helicases, which are the enzymes that unwind double ... was observed to bind the DNA in a cyclic motion, pulling the tracking or leading strand through binding loops ...

As previously mentioned, the location at which a DNA strand begins to unwind into two separate single strands is known as the origin of replication. As shown in Figure 1, when the double helix ...

The helicase activities unwind DNA in front of the fork to create regions ... Claspin (MRC1 in yeast) helps connect the leading-strand polymerase epsilon (light blue circle) to the helicase.

We've now zoomed in enough to see portions of the DNA strand. The DNA is wrapped around histones -- protein structures that are sometimes depicted as discs. Histones carry a slight positive charge ...

Genes exist in most cells. Inside a cell is a long strand of the chemical DNA (deoxyribonucleic acid). A DNA sequence is a specific lineup of chemical base pairs along its strand. The part of DNA ...

Here is one of our many DNA clones, still attached to the vector. We have exposed the vector to heat, which has separated its double strand of DNA into two single strands. Add Material needed to ...

Original DNA template - DNA is a double helix made of two complementary strands. Each strand can be used as a template to create a new DNA molecule. Free DNA nucleotides – needed to form the new ...

RNA polymerase moves along the DNA strand. Free RNA nucleotides form hydrogen bonds with the exposed DNA strand nucleotides by complementary base pairing to form a strand of mRNA: Note - RNA ...

They constantly untangle knots in the DNA strand and create new chemical bonds when a strand of DNA breaks somewhere in the nucleus. When people read about repairing genetic material, they often ...

They constantly untangle knots in the DNA strand and create new chemical bonds when a strand of DNA breaks somewhere in the nucleus. "When people read about repairing genetic material, they often ...