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Guanine - Meaning, Definition & English Examples

Guanine is one of the four main nucleobases found in DNA and RNA. It pairs with cytosine and plays a key role in genetic coding and cellular function.

guanine

/ˈɡwɑːnin/ /ˈɡwɑːniːn/

Definition:

A purine base found in DNA and RNA, pairing with cytosine in genetic coding.

Synonyms:

2-amino-6-oxypurine, G base, nucleobase

Part of Speech:

noun

Antonyms:

thymine, uracil

Common Collocations:

DNA structure, nucleotide pairing, genetic code, RNA synthesis

Derivatives:

guanosine, deoxyguanosine

Usage Tips:

Use "guanine" when discussing genetics or biochemistry; it pairs specifically with cytosine in nucleic acids.

Common Phrases:

guanine-cytosine pair, guanine quadruplex, guanine nucleotide

Etymology:

Derived from "guano," as it was first isolated from bird excrement in 1844.

Examples:

  • 1. Guanine is a key component of DNA strands.
  • 2. The scientist studied how guanine bonds with cytosine.
  • 3. Mutations can alter the position of guanine in genes.
  • 4. Guanine levels were measured in the lab experiment.

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