A deeper look into the apparent self-defense mechanisms of these bacteriophage-resistant bacteria revealed their secret weapon: a group of enzymes called restriction endonucleases, or restriction ...

How does your body speed up these important reactions? The answer is enzymes. Enzymes in our bodies are catalysts that speed up reactions by helping to lower the activation energy needed to start a ...

Enzymes are also involved in the building up of chemical molecules elsewhere in the body. In an organism, the active site of each enzyme is a different shape. It is a perfect match to the shape of ...

Enzymes catalyze nearly all of the chemical reactions that occur in biological systems. Enzymes are generally proteins but also include catalytic DNA and catalytic RNA. As effective biological ...