Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An essential amino acid, C9H11NO2, that occurs as a constituent of many proteins and is normally converted to tyrosine in the human body. It is necessary for growth in infants and for nitrogen equilibrium in adults.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biochemistry An
essential amino acid C9H11NO2 found in mostanimal proteins ; it is essential forgrowth ; theinability tometabolize it leads tophenylketonuria ; it is aconstituent ofaspartame .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an essential amino acid found in proteins and needed for growth of children and for protein metabolism in children and adults; abundant in milk and eggs; it is normally converted to tyrosine in the human body
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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PKU is described by scientists as an autosomal recessive genetic disease that is characterized by a deficiency in an enzyme called phenylalanine hydroxylase (PAH).
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It helps synthesize the body from the phenylalanine which is another type of amino acid.
EzineArticles 2010
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- Amino acid deficiency - Amino acids such as phenylalanine, tyrosine and tryptophan provide the basis for the body's production of important neuro-transmitters in the body.
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The investigators found that the bypass patients had much lower levels of amino acids known as branched-chain amino acids, and the amino acids phenylalanine and tyrosine.
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The investigators found that the bypass patients had much lower levels of amino acids known as branched-chain amino acids, and the amino acids phenylalanine and tyrosine.
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And in fact there is a ‘vaccine’ — or more accurately, a treatment (low-phenylalanine diets) — that eliminates this retardation.
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One of the reasons for this side effect, researchers have discovered, is because the phenylalanine in aspartame dissociates from the ester bond.
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You see, I don't do sugarless, and in particular aspartame, phenylalanine and all that other junk.
Alona Elkayam: The Best and Worst Dressed Brands of the Week: Slink and Drink in NYC Alona Elkayam 2010
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Contains phenylalanine, an amino acid that helps relay signals from one brain cell to another.
The 17 Day Diet Dr. Mike Moreno 2010
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One of the reasons for this side effect, researchers have discovered, is because the phenylalanine in aspartame dissociates from the ester bond.
Prolagus commented on the word phenylalanine
Oh well, I'm not scared of being eating an essential aminoacid!
April 8, 2008
sarra commented on the word phenylalanine
a beauty to spend time repeating loudly! (As I did once I decided to try and pronounce it for the first time a few years ago.)
April 26, 2008
Prolagus commented on the word phenylalanine
In Islamic countries, this aminoacid is not phenylhalal.
April 26, 2008