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guanine

File:Guanin.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ169313· pop 72· linked from 956 articles

Also known as Gua, 2-amino-6-oxopurine, Stella Polaris, Mearlmaid AA, Pearl Essence, C.I. Natural White 1, CI Natural white 1, Naturon

Guanine () (symbol G or Gua) is one of the four main nucleotide bases 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. The guanine nucleoside is called guanosine.

AI overview

Guanine is one of the four basic building blocks of DNA and RNA, the molecules that carry genetic information in all living things. It always pairs with another building block called cytosine, and this pairing is essential for how genetic information is stored and copied.

AI-generated from the Wikipedia summary — may contain errors.

Chemical data

Formula
C5H5N5O
Molecular weight
151.13 g/mol
IUPAC name
2-amino-3,7-dihydropurin-6-one
SMILES
C1=NC2=C(N1)C(=O)N=C(N2)N
InChIKey
UYTPUPDQBNUYGX-UHFFFAOYSA-N
XLogP
-1
Polar surface area
96.2 Ų
H-bond donors
3
H-bond acceptors
2
Formal charge
0

via PubChem

Research

81,565 papers

via PubMed

~6 min read

Encyclopedic overview

8 sections
Contents
  • Properties
  • History
  • Synthesis
  • Biosynthesis
  • Other occurrences and biological uses
  • See also
  • References
  • External links

Guanine () (symbol G or Gua) is one of the four main nucleotide bases 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. The guanine nucleoside is called guanosine.

With the formula C5H5N5O, guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. This unsaturated arrangement means the bicyclic molecule is planar.

Excerpted from Wikipedia’s “guanine” article, available under the CC BY-SA 4.0 licence.

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