N-Acetyltransferase is an enzyme that plays a crucial role in the process of acetylation, where an acetyl group is transferred to a substrate molecule. This process is important for the metabolism of various drugs and the detoxification of harmful substances in the body. There are different types of N-acetyltransferases, which can vary in their activity among individuals, influencing how they respond to medications. The activity of N-acetyltransferase is often studied in relation to pharmacogenetics, as genetic variations can affect enzyme function. For example, some people may be classified as "slow" or "fast" acetylators, impacting their drug metabolism and potential side effects. Understanding these variations can help tailor medical treatments to individual needs, improving therapeutic outcomes.