Chemicals and Drugs

Sigma Factor

A protein which is a subunit of RNA polymerase. It effects initiation of specific RNA chains from DNA.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A protein which is a subunit of RNA polymerase. It effects initiation of specific RNA chains from DNA.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

10 entry terms
  • Sigma Element
  • Sigma Initiation Factor
  • Sigma Subunit
  • Factor, Sigma
  • Factor, Sigma Initiation
  • Initiation Factor, Sigma
  • Subunit, Sigma
  • Minor Sigma Factor
  • RNA Polymerase Sigma Factor H
  • Sigma Factor, Minor

MeSH Record

Aspects Covered

30 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, deficiency, 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

a transcription factor; /biosyn /physiol permitted

MeSH Record

History Note

91(77); was see under TRANSCRIPTION FACTORS 1977-90

MeSH Record

Previous Indexing

  • Bacterial Proteins (1973-1976)
  • Proteins (1966-1976)
  • Transcription, Genetic (1973-1976)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Sigma Factor. Medical Subject Headings (MeSH). 2026. Unique ID D012808. http://id.nlm.nih.gov/mesh/2026/D012808
  2. Sigma Factor. In: Wikipedia. https://en.wikipedia.org/wiki/Sigma_factor
  3. Sigma Factor. In: Wikidata. https://www.wikidata.org/wiki/Q306436