This narrated animation illustrates the process of protein synthesis,starting with chromosomal DNA inside the cell's nucleus. A gene istranscribed into messenger RNA, which leaves the nucleus and binds toa ribosome in the cytoplasm. There, transfer RNAs attach and build apolypeptide chain that will fold into a functional protein. Adaptedfrom Interactive NOVA: Secret of Life.
This video is available in both English and Spanish audio, along with corresponding closed captions.