Examples of threonine in a Sentence
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Nine essential amino acids—histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine—are available only through foods or supplements.
—
Stacey Colino, Time, 27 May 2025
The name refers to amino acids involved in two new mutations on the virus’s spike protein: phenylalanine (F), leucine (L), arginine (R) and threonine (T).
—Lauren J. Young, Scientific American, 5 June 2024
Corn, for example — considered a dietary staple by many people — is missing the essential amino acids tryptophan, lysine and threonine.
—Ascend Agency, Baltimore Sun, 1 Mar. 2024
These variants are offshoots of Omicron and get their name from their spike protein mutations: The amino phenylalanine (abbreviated as F) replaces the amino acid leucine (abbreviated as L), while the amino acid arginine (R) is replaced by threonine (T).
—Korin Miller, Verywell Health, 8 May 2024
High-quality protein is any protein that contains all of the nine essential amino acids (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine) that our bodies don’t make on their own.
—USA TODAY, 2 July 2023
Repeats with a lot of proline, threonine and serine transform a typical protein to a mucin because of the polypeptide structure that is formed.
—Coren Walters-Stewart, Discover Magazine, 18 Oct. 2022
The nine essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
—Amber Smith, Discover Magazine, 16 Nov. 2022
In both types, a protein backbone is studded with strings of sugars called glycans that are linked to either the amino acid asparagine (N-Glycans) or to the amino acids serine and threonine (O-Glycans).
—Diana Kwon, Discover Magazine, 9 July 2019
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Stacey Colino, Time, 27 May 2025
The name refers to amino acids involved in two new mutations on the virus’s spike protein: phenylalanine (F), leucine (L), arginine (R) and threonine (T).
—Lauren J. Young, Scientific American, 5 June 2024
Corn, for example — considered a dietary staple by many people — is missing the essential amino acids tryptophan, lysine and threonine.
—Ascend Agency, Baltimore Sun, 1 Mar. 2024
These variants are offshoots of Omicron and get their name from their spike protein mutations: The amino phenylalanine (abbreviated as F) replaces the amino acid leucine (abbreviated as L), while the amino acid arginine (R) is replaced by threonine (T).
—Korin Miller, Verywell Health, 8 May 2024
High-quality protein is any protein that contains all of the nine essential amino acids (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine) that our bodies don’t make on their own.
—USA TODAY, 2 July 2023
Repeats with a lot of proline, threonine and serine transform a typical protein to a mucin because of the polypeptide structure that is formed.
—Coren Walters-Stewart, Discover Magazine, 18 Oct. 2022
The nine essential amino acids are: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
—Amber Smith, Discover Magazine, 16 Nov. 2022
In both types, a protein backbone is studded with strings of sugars called glycans that are linked to either the amino acid asparagine (N-Glycans) or to the amino acids serine and threonine (O-Glycans).
—Diana Kwon, Discover Magazine, 9 July 2019
Cite this Entry
“Threonine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/threonine. Accessed 18 Jul. 2025.
Copy CitationMedical Definition
threonine
noun
thre·o·nine
ˈthrē-ə-ˌnēn 
: a colorless crystalline essential amino acid C4H9NO3 that is found in various proteins
—abbreviation Thr
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