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serine

American  
[ser-een, -in, seer-] / ˈsɛr in, -ɪn, ˈsɪər- /

noun

Biochemistry.
  1. a crystalline amino acid, HOCH 2 CH(NH2 )COOH, found in many proteins and obtained by the hydrolysis of sericin, the protein constituting silk gum. Ser; S


serine British  
/ -rɪn, ˈsɪəriːn, ˈsɛriːn /

noun

  1. a sweet-tasting amino acid that is synthesized in the body and is involved in the synthesis of cysteine; 2-amino-3-hydroxypropanoic acid. Formula: CH 2 (OH)CH(NH 2 )COOH

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

serine Scientific  
/ sĕrēn′ /
  1. A nonessential amino acid. Chemical formula: C 3 H 7 NO 3 .

  2. See more at amino acid


Etymology

Origin of serine

First recorded in 1875–80; ser(um) + -ine 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

To address this limitation, the researchers developed a targeted supplement containing methionine, arginine, and serine.

From Science Daily • Apr. 20, 2026

They either deprived mice of dietary serine or used genetic methods to block the cells from producing their own.

From Science Daily • Nov. 7, 2025

"Our findings suggest that we might be able to speed up the healing of skin wounds by manipulating serine levels through diet or medications."

From Science Daily • Nov. 7, 2025

Earlier research from the Fuchs lab showed that precancerous skin stem cells can become dependent on circulating serine and that limiting serine in the diet helps stop these cells from turning cancerous.

From Science Daily • Nov. 7, 2025

As hypertensive pulmonary blood vessels metabolize glutamine and serine, they create two new amino acids, called proline and glycine.

From Science Daily • May 2, 2024

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