guanine

noun
gua·​nine | \ ˈgwä-ˌnēn How to pronounce guanine (audio) \

Definition of guanine

: a purine base C5H5N5O that codes genetic information in the polynucleotide chain of DNA or RNA — compare adenine, cytosine, thymine, uracil

Examples of guanine in a Sentence

Recent Examples on the Web The low prevalence of uracil sequences is connotated by an enrichment for guanine and cytosine sequences. William A. Haseltine, Forbes, 28 Oct. 2021 Researchers have long been intrigued by the possibility that evolution could have gone in a different direction with DNA’s four bases: adenine (A), thymine (T), cytosine (C) and guanine (G). Quanta Magazine, 12 July 2021 Each gene consists of some number of base pairs made of adenine (A), thymine (T), guanine (G), and cytosine (C). Caroline Delbert, Popular Mechanics, 3 June 2021 One by one each of the four bases - adenine, thymine, guanine, cytosine, or A, T, G, C - washes over the plate containing Nicholas' exons. Mark Johnson And Kathleen Gallagher, Milwaukee Journal Sentinel, 21 Dec. 2010 In the case of SARS-CoV-2, which has an RNA genome based on adenine, cytosine, guanine and uracil, sometimes mistakes happen. Quanta Magazine, 25 Feb. 2021 To do so, researchers typically convert a data file’s string of digital 1s and 0s into combinations of the molecule’s four bases: adenine, guanine, cytosine, and thymine. Robert F. Service, Science | AAAS, 11 Jan. 2021 Glass mirrors are made with a thin coating of metal; with fish, the reflective effect comes from stacks of super-thin plate-like crystals of the chemical compound guanine. Helen Czerski, WSJ, 17 Dec. 2020 These differences - the base adenine in one position instead of guanine - determine everything from harmless diversity (brown hair vs. blond) to the defects that cause disease. Mark Johnson And Kathleen Gallagher, Milwaukee Journal Sentinel, 21 Dec. 2010

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'guanine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of guanine

1850, in the meaning defined above

History and Etymology for guanine

guano + -ine; from its being found especially in guano

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Time Traveler for guanine

Time Traveler

The first known use of guanine was in 1850

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Dictionary Entries Near guanine

guaniferous

guanine

guano

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Statistics for guanine

Last Updated

8 Nov 2021

Cite this Entry

“Guanine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/guanine. Accessed 6 Dec. 2021.

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More Definitions for guanine

guanine

noun
gua·​nine | \ ˈgwän-ˌēn How to pronounce guanine (audio) \

Medical Definition of guanine

: a purine base C5H5N5O that codes genetic information in the polynucleotide chain of DNA or RNA — compare adenine, cytosine, thymine, uracil

More from Merriam-Webster on guanine

Britannica.com: Encyclopedia article about guanine

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