出典:Wiktionary
guano + -ine. Guanine was named by the German chemist Julius Bodo Unger in 1846 who isolated it from guano.
出典:Wikipedia
出典:『Wikipedia』 (2011/07/22 22:59 UTC 版)
Guanine (G) is one of the four main nucleobases found in the nucleic acids DNA and RNA, the others being adenine, cytosine, and thymine (uracil in RNA). In DNA, guanine is paired with cytosine. With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Being unsaturated, the bicyclic molecule is planar. The guanine nucleoside is called guanosine.
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