Before a cell divides, its DNA is replicated so that each daughter cell inherits the same genetic information. The two copies, known as "sister chromatids," are held together by a ring-shaped protein ...

DNA replication is the process whereby cells make an exact copy of their DNA before cell division. A key part of the intricate DNA replication machinery is a molecular motor called CMG, which has the ...

Scientists look at the base pairs that compose the "rungs" of the DNA ladder to determine a genome's sequence. The success of E. coli bacteria depends on their ability to multiply very rapidly by ...

DNA replication is essential to all life, yet many basic mechanisms in that process remain unknown to scientists. The structure of the replisome--a block of proteins responsible for unwinding the DNA ...

A series of electron micrographs show the barrel-shaped helicase with several components of the replisome: a) helicase (grey) with Ctf4 (light blue), which is a recruitment factor for the ...

If parent cells and their daughter cells are to share a stable identity, parent cells must divide—and replicate their DNA—while ensuring that their histones are distributed properly to their daughter ...