VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.

VOICEOVER: Enzymes of the digestive system. Three key types of enzymes in different parts of our digestive system help break down the food to provide the energy our body needs to grow and repair.

How, though, would a DNA-degrading enzyme distinguish between the two? Arber hypothesized that bacterial cells might express two types of enzymes: a restriction enzyme that recognizes and cuts up ...

Various types of endonucleases – enzymes that can cut DNA – were already known before CRISPR-Cas9. The discovery of restriction enzymes in the early 1970s heralded a new age in molecular biology.

Enzymes are biological catalysts that speed up chemical reactions in living organisms. They are essential for life, as they play a crucial role in various biological processes, such as digestion, ...