Chemicals and Drugs

Ribosomal RNA

The most abundant form of RNA. Together with proteins, it forms the ribosomes, playing a structural role and also a role in ribosomal binding of mRNA and tRNAs. Individual chains are conventionally designated by their sedimentation coefficients. In eukaryotes, four large chains exist, synthesized in the nucleolus and constituting about 50% of the ribosome. (Dorland, 28th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The most abundant form of RNA. Together with proteins, it forms the ribosomes, playing a structural role and also a role in ribosomal binding of mRNA and tRNAs. Individual chains are conventionally designated by their sedimentation coefficients. In eukaryotes, four large chains exist, synthesized in the nucleolus and constituting about 50% of the ribosome. (Dorland, 28th ed)

MeSH Record

Classification

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See Also

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Synonyms

3 entry terms
  • RNA, Ribosomal
  • 15S RNA
  • RNA, 15S

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.

MeSH Record

Indexing Annotation

IM; /drug eff /ultrastruct permitted; RRNA OPERON is also available

MeSH Record

History Note

72(71)

MeSH Record

Previous Indexing

  • RNA (1966-1970)
  • Ribosomes (1966-1970)

MeSH Hierarchy

Tree Number

MeSH Record

NLM Classification

QU 58.7

AMA Style

References

  1. National Library of Medicine. Ribosomal RNA. Medical Subject Headings (MeSH). 2026. Unique ID D012335. http://id.nlm.nih.gov/mesh/2026/D012335
  2. Ribosomal RNA. In: Wikipedia. https://en.wikipedia.org/wiki/Ribosomal_RNA
  3. Ribosomal RNA. In: Wikidata. https://www.wikidata.org/wiki/Q215980