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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  
/ ˈsɪəriːn, ˈsɛriːn, -rɪn /

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.

See Examples For:

"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

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

In their study published in Cell Metabolism, the scientists showed that when serine levels fall, the ISR activates and hair production slows down.

From Science Daily Nov. 7, 2025

"However, we did see that if we prevented a stem cell from making its own serine and replenished its losses through a high-serine diet, we were able to partially rescue hair regeneration," Novak adds.

From Science Daily Nov. 7, 2025

They found that hypertensive pulmonary blood vessel cells have a voracious appetite for two amino acids, glutamine and serine, and -- as happens with any unbalanced diet -- there are consequences.

From Science Daily May 2, 2024

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