Chemicals and Drugs

beta-Galactosidase

A group of enzymes that catalyzes the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-galactosides. Deficiency of beta-Galactosidase A1 may cause GANGLIOSIDOSIS, GM1.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A group of enzymes that catalyzes the hydrolysis of terminal, non-reducing beta-D-galactose residues in beta-galactosides. Deficiency of beta-Galactosidase A1 may cause GANGLIOSIDOSIS, GM1.

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Classification

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Synonyms

18 entry terms
  • Lactases
  • beta-D-Galactosidase
  • beta-Galactosidases
  • lac Z Protein
  • Protein, lac Z
  • beta D Galactosidase
  • beta Galactosidase
  • beta Galactosidases
  • Dairyaid
  • Lactaid
  • Lactogest
  • Lactrase
  • beta-Galactosidase A1
  • beta-Galactosidase A2
  • beta-Galactosidase A3
  • beta Galactosidase A1
  • beta Galactosidase A2
  • beta Galactosidase A3

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, 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.

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Indexing Annotation

/defic: consider also LACTOSE INTOLERANCE and GANGLIOSIDOSIS, GM1

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History Note

92; was BETA-GALACTOSIDASES 1978-91 (see under GALACTOSIDASES 1978-90)

MeSH Record

Previous Indexing

  • Galactosidases (1966-1977)

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AMA Style

References

  1. National Library of Medicine. beta-Galactosidase. Medical Subject Headings (MeSH). 2026. Unique ID D001616. http://id.nlm.nih.gov/mesh/2026/D001616
  2. beta-Galactosidase. In: Wikipedia. https://en.wikipedia.org/wiki/%CE%92-Galactosidase
  3. beta-Galactosidase. In: Wikidata. https://www.wikidata.org/wiki/Q286379