Chemicals and Drugs

Semaphorin-3A

The prototypical and most well-studied member of the semaphorin family. Semaphorin-3A is an axon-repulsive guidance cue for migrating neurons in the developing nervous system. It has so far been found only in vertebrates, and binds to NEUROPILIN-1/plexin complex receptors on growth cones. Like other class 3 semaphorins, it is a secreted protein.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The prototypical and most well-studied member of the semaphorin family. Semaphorin-3A is an axon-repulsive guidance cue for migrating neurons in the developing nervous system. It has so far been found only in vertebrates, and binds to NEUROPILIN-1/plexin complex receptors on growth cones. Like other class 3 semaphorins, it is a secreted protein.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

8 entry terms
  • Collapsin
  • Collapsin-1
  • Collapsing Factor
  • Sem D
  • Sema3A
  • Semaphorin 3A
  • Semaphorin D
  • Collapsin 1

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

History Note

2003; use SEMAPHORIN 3A (NM) 1994-2002

MeSH Record

Previous Indexing

  • Glycoproteins (1993-2002)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Semaphorin-3A. Medical Subject Headings (MeSH). 2026. Unique ID D040121. http://id.nlm.nih.gov/mesh/2026/D040121
  2. Semaphorin-3A. In: Wikidata. https://www.wikidata.org/wiki/Q21122063