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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.

As proline and collagen are widely available and don't rely on chains of hydrocarbons like previous methods, the team hope to sustainably scale up their current production in the lab.

From Science Daily

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

From Science Daily

However, they did find that the variant causes a shift from the amino acid proline to leucine, which may interfere with the formation of a helix found in the normal version.

From Science Daily

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

From Seattle Times

Gelatin is made almost entirely of protein — 98 to 99% to be exact, per Healthline — and contains several amino acids, including proline and glycine, which both help rebuild tissue that lines the digestive tract.

From Salon