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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).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈtrɪptəˌfæn) or


(Biochemistry) an essential amino acid; a component of proteins necessary for growth
[C20: from trypsin + -phan from Greek phainō appear]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


An essential amino acid. See more at amino acid.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n. triptófano, aminoácido cristalino presente en las proteínas, esencial a la vida animal.
English-Spanish Medical Dictionary © Farlex 2012


n triptófano
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
The current research examined the impacts that dietary BCAAs and other essential amino acids such as tryptophan had on the health and body composition of mice.
( Tryptophan is also used to produce niacin, a B vitamin that aids in the proper development of the skin, digestion and nerves.
Two components of foods that are shown to be most helpful in improving sleep quality are melatonin and tryptophan.
The tryptophan-kynurenine pathway controls tryptophan availability for serotonin synthesis in the gastrointestinal tract and the central nervous system.
One prevalent notion is that food containing tryptophan increases serotonin levels in the brain and alters neural processing in mood-regulating neurocircuits," Marijn C.W.
One of the biggest influence on our melatonin levels appears to be our intake of a type of protein called tryptophan. Tryptophan is an essential amino acid - the building blocks of proteins.
In order for serotonin to be produced, a precursor known as tryptophan is required.
* Xanthurenic acid (XA)--a tryptophan metabolite--is high in serum in gestational diabetes
TAMPA -- The far higher rate of eating disorders in women than men appears to be explained at least in part by a greater acute depletion of tryptophan, which is essential for the formation of serotonin, a key mediator of risk, according to a research review presented at the annual meeting of the American College of Psychiatrists.
* 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.