cysteine
noun
cys·te·ine
ˈsi-stə-ˌēn 
: a crystalline sulfur-containing amino acid C3H7NO2S readily oxidizable to cystine
Examples of cysteine in a Sentence
Recent Examples on the Web
So the scientists exposed the tardigrades to different kinds of molecules known to block cysteine oxidation, as scientists call binding by a free radical.
—
Meghan Bartels, Scientific American, 17 Jan. 2024
The survival mechanism kicks off when cysteines, one of the amino acids that forms proteins in the body, come into contact with these oxygen free radicals and becomes oxidized, the researchers found.
—Jenna Schnuer, CNN, 5 Feb. 2024
The team noticed that, in particular, the free radicals reacted with cysteine, an amino acid used in protein production.
—Christian Thorsberg, Smithsonian Magazine, 18 Jan. 2024
Under stressful conditions, with cysteine unavailable to the free radicals being produced, the tardigrades couldn’t form tuns.
—Meghan Bartels, Scientific American, 17 Jan. 2024
As well as allicin, sulphur compounds including diallyl disulfide and s-allyl cysteine enter your body via the digestive tract and exert impressive antiviral, anti-inflammatory and anti-fungal powers.
—Georgia Day, Vogue, 1 Dec. 2023
This inhibitor acts as an antagonist of STING by binding to a specific part of the protein — cysteine residue at position 91.
—William A. Haseltine, Forbes, 13 Nov. 2023
The synthetic form of the amino acid cysteine, NAC has some promising health benefits.
—Good Housekeeping, 3 Aug. 2023
Some small studies have suggested that NAC supplements may help improve nighttime breathing and reduce snoring in people with sleep apnea.18 Cysteine Deficiency Since cysteine is made in the body and found in high-protein foods, deficiency is rare.
—Nick Blackmer, Verywell Health, 21 June 2023
Meghan Bartels, Scientific American, 17 Jan. 2024
The survival mechanism kicks off when cysteines, one of the amino acids that forms proteins in the body, come into contact with these oxygen free radicals and becomes oxidized, the researchers found.
—Jenna Schnuer, CNN, 5 Feb. 2024
The team noticed that, in particular, the free radicals reacted with cysteine, an amino acid used in protein production.
—Christian Thorsberg, Smithsonian Magazine, 18 Jan. 2024
Under stressful conditions, with cysteine unavailable to the free radicals being produced, the tardigrades couldn’t form tuns.
—Meghan Bartels, Scientific American, 17 Jan. 2024
As well as allicin, sulphur compounds including diallyl disulfide and s-allyl cysteine enter your body via the digestive tract and exert impressive antiviral, anti-inflammatory and anti-fungal powers.
—Georgia Day, Vogue, 1 Dec. 2023
This inhibitor acts as an antagonist of STING by binding to a specific part of the protein — cysteine residue at position 91.
—William A. Haseltine, Forbes, 13 Nov. 2023
The synthetic form of the amino acid cysteine, NAC has some promising health benefits.
—Good Housekeeping, 3 Aug. 2023
Some small studies have suggested that NAC supplements may help improve nighttime breathing and reduce snoring in people with sleep apnea.18 Cysteine Deficiency Since cysteine is made in the body and found in high-protein foods, deficiency is rare.
—Nick Blackmer, Verywell Health, 21 June 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'cysteine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near cysteine
Cite this Entry
“Cysteine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cysteine. Accessed 24 Apr. 2024.
Copy CitationMedical Definition
cysteine
noun
cys·teine
ˈsis-tə-ˌēn
: a sulfur-containing amino acid C3H7NO2S occurring in many proteins and glutathione and readily oxidizable to cystine
—abbreviation Cys
Love words? Need even more definitions?
Merriam-Webster unabridged
Share