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guanine
[ gwah-neen ]
noun
, Biochemistry.
- a purine base, C 5 H 5 N 5 O, that is a fundamental constituent of DNA and RNA, in which it forms base pairs with cytosine. : G
guanine
/ ˈɡuːəˌniːn; ˈɡwɑːniːn /
noun
- a white almost insoluble compound: one of the purine bases in nucleic acids. Formula: C 5 H 5 N 5 O
guanine
/ gwä′nēn′ /
- A purine base that is a component of DNA and RNA, forming a base pair with cytosine. It also occurs in guano, fish scales, sugar beets, and other natural materials. Chemical formula: C 5 H 5 ON 5 .
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Word History and Origins
Origin of guanine1
C19: from guano + -ine ²
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Example Sentences
The cutis contains several kinds of specialized cells in many layers, each filled with minute granules of guanine.
From Project Gutenberg
Adenine and guanine are constituents of all nucleic acids (see below) and, hence, are found in all plant and animal tissues.
From Project Gutenberg
Besides white (guanine) cells, the pigment includes black, brown, yellow and red.
From Project Gutenberg
The artificial preparation of theobromine and caffeine from xanthine, and guanine also show clearly their relations.
From Project Gutenberg
It was first prepared in 1861 by A. Strecker, who oxidized guanine with hydrochloric acid and potassium chlorate.
From Project Gutenberg
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