
1) Essential amino acid 2) Ketogenic amino acid
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Threonine (abbreviated as Thr or T) is an α-amino acid with the chemical formula HO2CCH(NH2)CH(OH)CH3. Its codons are ACU, ACA, ACC, and ACG. This essential amino acid is classified as polar. Together with serine, threonine is one of two proteinogenic amino acids bearing an alcohol group (tyrosine is not an alcohol but a phenol, since its hydroxy...
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http://en.wikipedia.org/wiki/Threonine

an amino acid obtainable from many proteins. One of the last amino acids to be isolated (1932), threonine is one of several so-called essential amino ... [4 related articles]
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<amino acid> The hydroxylated polar amino acid. ... (15 Oct 1997) ...
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(thre´o-nēn) a naturally occurring essential amino acid.
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Essential amino-acid
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(= Thr; T; 119 D) The hydroxylated polar amino acid. See Table A2.
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(T, Thr) Type: Term Pronunciation: thrē′ō-nēn Definitions: 1. the l-isomer is one of the naturally occurring amino acids, included in the structure of most proteins, and nutritionally essential in the diet of humans and other mammals.
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Threonine: An amino acid, one of the 20 building blocks of protein. A dietary essential amino acid, threonine is necessary for optimal growth in childhood but its exact roles in metabolism are unknown. Symbol: Thr.
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[
n] - a colorless crystalline amino acid found in protein
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http://www.webdictionary.co.uk/definition.php?query=threonine
noun a colorless crystalline amino acid found in protein; occurs in the hydrolysates of certain proteins; an essential component of human nutrition
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No exact match found.