Chemicals and Drugs

Codon

A set of three nucleotides in a protein coding sequence that specifies individual amino acids or a termination signal (CODON, TERMINATOR). Most codons are universal, but some organisms do not produce the transfer RNAs (RNA, TRANSFER) complementary to all codons. These codons are referred to as unassigned codons (CODONS, NONSENSE).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A set of three nucleotides in a protein coding sequence that specifies individual amino acids or a termination signal (CODON, TERMINATOR). Most codons are universal, but some organisms do not produce the transfer RNAs (RNA, TRANSFER) complementary to all codons. These codons are referred to as unassigned codons (CODONS, NONSENSE).

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Classification

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See Also

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Synonyms

5 entry terms
  • Codons
  • Codon, Sense
  • Sense Codon
  • Codons, Sense
  • Sense Codons

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

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Indexing Annotation

general or unspecified; prefer specifics

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History Note

91(75); was see under RNA, MESSENGER 1975-90

MeSH Hierarchy

Tree Numbers

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NLM Classification

QU 58.7

AMA Style

References

  1. National Library of Medicine. Codon. Medical Subject Headings (MeSH). 2026. Unique ID D003062. http://id.nlm.nih.gov/mesh/2026/D003062
  2. Codon. In: Wikipedia. https://en.wikipedia.org/wiki/Codon
  3. Codon. In: Wikidata. https://www.wikidata.org/wiki/Q165052