histidine

noun

his·​ti·​dine ˈhi-stə-ˌdēn How to pronounce histidine (audio)
: a crystalline essential amino acid C6H9N3O2 formed by the hydrolysis of most proteins

Examples of histidine in a Sentence

Recent Examples on the Web High-quality protein is any protein that contains all of the nine essential amino acids (histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine) that our bodies don’t make on their own. USA TODAY, 2 July 2023 This supplement also contains 100% of your daily value of folate, 3,000 percent of your daily value of B12, and the amino acid L-histidine. Tamar Kane, Verywell Health, 5 Feb. 2023 While some groups benefit from B12 and folate supplementation, less is known about L-histidine supplementation. Tamar Kane, Verywell Health, 5 Feb. 2023 Nickel chemically binds to a protein produced by the malaria parasite, called histidine-rich protein 2. Josie Garthwaite, Discover Magazine, 16 June 2012 In both samples, individuals with the derived G allele, which codes for the amino acid arginine, show lower melanin levels than those with the ancestral A allele, which codes for the amino acid histidine. Razib Khan, Discover Magazine, 5 Mar. 2010 This essential amino acid can help treat premature ejaculation by delaying the conversion of histidine into histamine in your body. Dallas News, 23 Dec. 2022 Carnosine is an antioxidant that protects against disease-causing free radicals in the body by combining with the amino acid histidine. Amber Smith, Discover Magazine, 17 Oct. 2022 Proline to histidine is another neutral to positive shift, also pointing to a net positive increase in regional charge. William A. Haseltine, Forbes, 22 Oct. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'histidine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

International Scientific Vocabulary hist- + -idine

First Known Use

1896, in the meaning defined above

Time Traveler
The first known use of histidine was in 1896

Dictionary Entries Near histidine

Cite this Entry

“Histidine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/histidine. Accessed 18 Jun. 2024.

Medical Definition

histidine

noun
his·​ti·​dine ˈhis-tə-ˌdēn How to pronounce histidine (audio)
: a crystalline essential amino acid C6H9N3O2 formed by the hydrolysis of most proteins
abbreviation His

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