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Related to tryptophan: L-tryptophan


 (trĭp′tə-făn′) also tryp·to·phane (-fān′)
An essential amino acid, C11H12N2O2, formed from proteins during digestion by the action of proteolytic enzymes. It is necessary for normal growth and development and is the precursor of several substances, including serotonin and niacin.

[trypt(ic), of trypsin (formed on the model of pepsin, peptic); see trypsin + -phan(e).]


(ˈtrɪptəˌfæn) or


(Biochemistry) an essential amino acid; a component of proteins necessary for growth
[C20: from trypsin + -phan from Greek phainō appear]


(ˈtrɪp təˌfæn)

also tryp•to•phane


an essential amino acid, (C8H6N)CH2CH(NH2)COOH, released from proteins by the enzyme trypsin during digestion. Abbr: Trp;Symbol: W
[< German (1890), =trypto- (representing Greek trīptós rubbed; see trypsin) + -phan < Greek phaínein to show]


An essential amino acid. See more at amino acid.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.tryptophan - an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin
essential amino acid - an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet


n. triptófano, aminoácido cristalino presente en las proteínas, esencial a la vida animal.


n triptófano
References in periodicals archive ?
Regular exercise--Exercise Increases the synthesis of serotonin in the brain and boosts brain levels tryptophan, en essential amino acid that is the source material for the production of serotonin.
Turkey contains the amino acid tryptophan, which produces the brain mood enhancer serotonin and plays an important role in strengthening the immune system.
Supplementing with melatonin might be a quick and easy way to support a better night's sleep, but consuming foods high in tryptophan is also helpful, as this amino acid is used by your body to make melatonin.
BANANAS THIS fruit bowl staple is jam packed full of mood-boosting vitamins and minerals including tryptophan, vitamin B6, phosphorous and iron.
Indolamine 2,3-dioxygenase (IDO), first and rate-limiting enzyme of kynurenine (Kyn) pathway, is a tryptophan (Trp) degrading enzyme having immunoinflammatory effects.
These food items contain an appreciable amounts of tryptophan - an
Further, the bacterium needs tryptophan -- one of the building blocks of proteins -- to trigger the cells' appearance.
Tryptophan was given in the evening of postpartum day 4, and tyrosine was given the morning of day 5.
And foods high in tryptophan help us produce serotonin, the relaxing and calming brain chemical.
Abstract: Tryptophan 2,3-dioxygenase (TDO) exist only in liver while indoleamine 2, 3-dioxygenase (IDO) exists ubiquitously in the body, these are the most rate-limiting enzymes of kynurenine pathway (KP).
But contrary to popular belief, turkey and its tryptophan aren't the main culprits.
coli) cells to convert indole and L-Ser to L-Trp by tryptophan synthase (TSase) (10).