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proline

American  
[proh-leen, -lin] / ˈproʊ lin, -lɪn /

noun

Biochemistry.
  1. an alcohol-soluble amino acid, C 4 H 9 NHCOOH, occurring in high concentration in collagen. Pro; P


proline British  
/ ˈprəʊliːn, -lɪn /

noun

  1. a nonessential amino acid that occurs in protein

"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

proline Scientific  
/ prōlēn′ /
  1. A nonessential amino acid. Chemical formula: C 5 H 9 NO 2 .

  2. See more at amino acid


Etymology

Origin of proline

First recorded in 1900–05; alteration of pyrrolidine

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:

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

I have been taking niacin for years along with vitamin C and the amino acids lysine and proline.

From Seattle Times Jun. 14, 2023

For example, CCU, CCC, CCA, and CCG are all codons for proline.

From Textbooks Jun. 9, 2022

The reaction worked, proving that proline was an excellent catalyst and that an amino acid can drive what is known as asymmetric catalysis.

From New York Times Oct. 6, 2021

Nothing is known, however, of the process by which the more complicated closed-ring amino-acid compounds, such as proline, histidine, or tryptophane, are synthetized.

From The Chemistry of Plant Life by Roscoe Wilfred Thatcher

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