threonine

American  

[three-uh-neen, -nin] / ˈθri əˌnin, -nɪn /

noun

Biochemistry.

1. an essential amino acid, CH 3 CHOHCH(NH2 )COOH, obtained by the hydrolysis of proteins. Thr; T

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threonine British  

/ ˈθriːəˌniːn, -nɪn /

noun

1. an essential amino acid that occurs in certain proteins

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threonine Scientific  

/ thrē′ə-nēn′ /

1. An essential amino acid. Chemical formula: C ₄ H ₉ NO ₃ .

2. See more at amino acid

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Etymology

Origin of threonine

1925–30; threon- (alteration of Greek erythrón, neuter of erythrós red; erythro- ) + -ine ²

Example Sentences

Phosphorylation adds a phosphate group to serine, threonine, and tyrosine residues in a protein, changing their shapes, and activating or inactivating the protein.

From Textbooks • Jun. 9, 2022

Strain B is able to grow in a minimal medium only when supplemented with threonine, leucine, and thiamine.

From Textbooks • Jun. 9, 2022

Amino acids such as valine, methionine, and alanine are nonpolar or hydrophobic in nature, while amino acids such as serine, threonine, and cysteine are polar and have hydrophilic side chains.

From Textbooks • Jun. 9, 2022

Phosphorylation of serine and threonine residues often activates enzymes.

From Textbooks • Jun. 9, 2022

Metabolism experts have tried to prevent this in Brantner's case by adding two amino acids, lysine and threonine, to his diet.

From Time Magazine Archive