guanine

[ gwah-neen ]
/ ˈgwɑ nin /

noun Biochemistry.

a purine base, C5H5N5O, that is a fundamental constituent of DNA and RNA, in which it forms base pairs with cytosine. Symbol: G
Compare guanosine.

Origin of guanine

Example sentences from the Web for guanine

British Dictionary definitions for guanine

guanine
/ (ˈɡwɑːniːn, ˈɡuːəˌniːn) /

noun

a white almost insoluble compound: one of the purine bases in nucleic acids. Formula: C 5 H 5 N 5 O

Word Origin for guanine

C19: from guano + -ine ²

Medical definitions for guanine

guanine
[ gwänēn′ ]

n.

A purine base that is an essential constituent of both RNA and DNA.

Scientific definitions for guanine

guanine
[ gwänēn′ ]

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: C5H5ON5.