Chemicals and Drugs

Integrin alpha Chains

The alpha subunits of integrin heterodimers (INTEGRINS), which mediate ligand specificity. There are approximately 18 different alpha chains, exhibiting great sequence diversity; several chains are also spliced into alternative isoforms. They possess a long extracellular portion (1200 amino acids) containing a MIDAS (metal ion-dependent adhesion site) motif, and seven 60-amino acid tandem repeats, the last 4 of which form EF HAND MOTIFS. The intracellular portion is short with the exception of INTEGRIN ALPHA4.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The alpha subunits of integrin heterodimers (INTEGRINS), which mediate ligand specificity. There are approximately 18 different alpha chains, exhibiting great sequence diversity; several chains are also spliced into alternative isoforms. They possess a long extracellular portion (1200 amino acids) containing a MIDAS (metal ion-dependent adhesion site) motif, and seven 60-amino acid tandem repeats, the last 4 of which form EF HAND MOTIFS. The intracellular portion is short with the exception of INTEGRIN ALPHA4.

MeSH Record

Classification

Related Concepts

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MeSH Record

Synonyms

4 entry terms
  • Integrin alpha Subunits
  • alpha Integrins
  • Integrins, alpha
  • alpha Chains, Integrin

MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, agonists, analysis, antagonists & inhibitors, biosynthesis, blood, chemistry, classification, deficiency, drug effects, genetics, history, immunology, isolation & purification, metabolism, physiology, radiation effects, therapeutic use, ultrastructure.

MeSH Record

History Note

2003

MeSH Record

Previous Indexing

  • Integrins (1966-2002)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Integrin alpha Chains. Medical Subject Headings (MeSH). 2026. Unique ID D039001. http://id.nlm.nih.gov/mesh/2026/D039001
  2. Integrin alpha Chains. In: Wikipedia. https://en.wikipedia.org/wiki/CD11
  3. Integrin alpha Chains. In: Wikidata. https://www.wikidata.org/wiki/Q24780761