ScienceAugust 1, 2026
tryptophan
TRIP-tuh-fan
Definition
An essential amino acid in humans that is required for normal growth and serves as a vital precursor for the synthesis of serotonin and melatonin.
Etymology
The word is a chemical compound formed by combining 'tryptic' (referring to the enzyme trypsin, which breaks down proteins) and 'phan' (from Greek phainein, meaning to appear or show), as it was first isolated from the breakdown of proteins.
In the news
In this article, tryptophan is discussed as part of a metabolic pathway in the gut that contributes to the production of neurotransmitters involved in mood, sleep, and memory.
Gut feelings: How stress may reshape the microbiome and influence brain health
Read the full article ↗Griffin Daily News