cytosine

DNA base letter

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

It's represented by the letter C in genetic sequences: The mutation changed a cytosine to a thymine.

Along with adenine, guanine, and thymine (or uracil in RNA), cytosine forms the alphabet of the genetic code.

nucleicacids

guanine

Purine nucleobase in DNA

adeninePurine nucleobase in DNA
thymineDNA nitrogen base
uracilRNA pyrimidine nucleobase

base pairing · double helix · DNA · RNA · genetic code · replication · transcription · translation · codon · anticodon

biochemistry

pyrimidine

Heterocyclic aromatic nitrogen compound

phosphatePO₄ ion compound
ribosePentose in nucleotides
deoxyriboseSugar in genetic helices

deamination · methylation · alkylation · hydrogen bonding · ketone · backbone · 5-methylcytosine · epigenetics

pairing

guanine

Purine nucleobase in DNA

complementaryMutually supplying lacks
Watson-CrickDNA base pairing model
base pairTwo matched nucleotides bonded

specificity · mismatch · wobble · stability · melting point · recognition · fidelity

Categories

DNA Componentsadenine, guanine, thymine, deoxyribose, phosphate group
Biochemicalsamino acid, amino acids, protein, proteins, DNA
BiomoleculesDNA, protein, RNA, enzyme, mRNA
geneticsDNA, allele, genotype, genes, gene
DNA basesadenine, thymine, guanine, A, T
biochemistryenzymes, proteins, biochemistry, protein, enzyme

Opposites

base pairing complement

cytosineguanine

Purine nucleobase in DNA

adenine · purine · xanthine

Family

cytoplasm, cytology, nucleotide, cytokine, cytotoxic, nucleoside, cytoskeleton

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