Guanine

(CC) Image: David E. Volk
guanine
IUPAC name: Synonyms: G, dG, GUA, Formula:
Uses:
Properties:	DNA/RNA base
Hazards:
Mass (g/mol): CAS #:

Guanine is a natural biomolecule used as one of the five bases in RNA and DNA. It is incorporated into these nucleic acids in the form of guanosine, a chemical compound formed by the combination of guanine and a ribose sugar. Guanine is also naturally present in phosphorylated forms of guanosine.

Basepairs

(CC) Image: David E. Volk

Guanine and cytosine form a very stable Watson-Crick base pair containing three hydrogen bonds.