proinsulin
noun
pro·in·su·lin
(ˌ)prō-ˈin(t)-s(ə-)lən 
: a single-chain pancreatic polypeptide precursor of insulin that gives rise to the double chain of insulin by cleavage and loss of the middle part of the molecule
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At Cardiff University and King’s College London, researchers led by Dr. Mohammad Alhadj Ali isolated a compound called a proinsulin C19 A3 peptide.
—
Melissa Healy, latimes.com, 9 Aug. 2017
In the 1950s, insulin was derived from the pancreases of cows and pigs and was thought to be contaminated with another protein, which today is known as proinsulin.
—Denise Gellene, New York Times, 11 Jan. 2017
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Melissa Healy, latimes.com, 9 Aug. 2017
In the 1950s, insulin was derived from the pancreases of cows and pigs and was thought to be contaminated with another protein, which today is known as proinsulin.
—Denise Gellene, New York Times, 11 Jan. 2017
Cite this Entry
“Proinsulin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/proinsulin. Accessed 18 Apr. 2025.
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proinsulin
noun
pro·in·su·lin
(ˈ)prō-ˈin(t)-s(ə-)lən
: a single-chain pancreatic polypeptide precursor of insulin that gives rise to the double chain of insulin by loss of the middle part of the molecule
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