guanine

[ gwah-neen ]

Phonetic (Standard)IPA

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 /

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 .

Origin of guanine¹

Origin of guanine¹

C19: from guano + -ine ²

The cutis contains several kinds of specialized cells in many layers, each filled with minute granules of guanine.

Adenine and guanine are constituents of all nucleic acids (see below) and, hence, are found in all plant and animal tissues.

Besides white (guanine) cells, the pigment includes black, brown, yellow and red.

The artificial preparation of theobromine and caffeine from xanthine, and guanine also show clearly their relations.

It was first prepared in 1861 by A. Strecker, who oxidized guanine with hydrochloric acid and potassium chlorate.

April 23, 2024inveterate

[in-vet-er-it ]

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