Home Technical Information Amino Acids Tryptophan
Tryptophan, denoted by the symbol Trp or W, is an α-amino acid involved in protein biosynthesis. It consists of an α-amino group, an α-carboxylic acid group, and a side chain known as indole. This molecular structure renders tryptophan a polar molecule with a non-polar aromatic beta carbon substituent.Beyond its role in protein synthesis, tryptophan serves as a precursor for several important compounds. It acts as a precursor for the neurotransmitter serotonin, which plays a crucial role in the regulation of mood, sleep, and appetite. Additionally, tryptophan is a precursor for the hormone melatonin, involved in the regulation of the sleep-wake cycle. Furthermore, tryptophan contributes to the synthesis of vitamin B3 (niacin), an essential nutrient.The genetic code encodes tryptophan using the codon UGG.
Structure | ![]() |
CAS Number | 73-22-3 |
Classification |
Hydrophobic amino acids (nonpolar amino acids), including |
Categories |
Tryptophan Biosynthesis Related Compounds | |
617-12-9 | Chorismate |
118-92-3 | Anthranilate |
N-(5-Phospho-D-ribosyl)anthranilate | |
1-(2-Carboxyphenylamino)-1'-deoxy-D-ribulose 5'-phosphate | |
Indoleglycerol phosphate | |
73-22-3 | L-Tryptophan |