guanine

DNA base G

Guanine is one of the four chemical bases that make up DNA and RNA, pairing with cytosine in the double helix structure.

The letter G in genetic sequences represents guanine: The mutation replaced a guanine with an adenine.

The compound also occurs in fish scales and guano, giving certain materials an iridescent quality.

nucleobase

adenine

Purine nucleobase in DNA

purine · pyrimidine · complementary · nucleotide · nucleoside · Watson-Crick · hydrogen bonding · tautomer · deamination · oxidation

DNA

double helix

Two intertwined spirals

base pairing · adenine · cytosine · thymine · nucleotide · sequencing · mutation · telomere

RNA

uracil

RNA pyrimidine nucleobase

transfer RNA · transcription · codon · GTP

biochemistry

GTP

Guanine nucleotide triphosphate

  • GDPNational output abbreviation
  • GMPManufacturing compliance framework
  • salvage pathwayCellular recycling of molecules

xanthine · uric acid · phosphorylation

pigment

iridescence

Color shift from interference

nail polish · reflective

Categories
Opposites
base pairing complement

guaninecytosine

Pyrimidine nucleobase in genetics

thymine · uracil · pyrimidine · adenine

Family

guano

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Rated G