Tuesday, January 30, 2007
DNA Packaging and DNA Replication
The first part of this video shows how long strands of DNA are packaged in eukaryotic cells. It's pretty good. The second part is a demonstrating of how the replisome works. The replisome is a little molecular machine that copies DNA. The animation doesn't do a very good job of conveying the idea that the various components of the replisome interact with each other to form a compact blob at the replication fork.
The concept of a "molecular machine" was promoted by Bruce Alberts who worked on DNA replication. It gets the IDiots all in a tizzy whenever we talk about molecular machines. They think we're advocating intelligent design!
[Hat Tip: Living the Scientific Life]