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beta-Galactosidase MeSH Descriptor Data 2026


MeSH Heading
beta-Galactosidase
Tree Number(s)
D08.811.277.450.410.100
Unique ID
D001616
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D001616
Annotation
/defic: consider also LACTOSE INTOLERANCE and GANGLIOSIDOSIS, GM1
Scope Note
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.
Entry Term(s)
Dairyaid
Lactaid
Lactases
Lactogest
Lactrase
beta-D-Galactosidase
beta-Galactosidase A1
beta-Galactosidase A2
beta-Galactosidase A3
beta-Galactosidases
lac Z Protein
Registry Numbers
EC 3.2.1.23
0
CAS Type 1 Name
beta-D-Galactoside galactohydrolase
Previous Indexing
Galactosidases (1966-1977)
See Also
Gangliosidosis, GM1
Public MeSH Note
92; was BETA-GALACTOSIDASES 1978-91 (see under GALACTOSIDASES 1978-90)
Online Note
use BETA-GALACTOSIDASE to search BETA-GALACTOSIDASES 1978-91
History Note
92; was BETA-GALACTOSIDASES 1978-91 (see under GALACTOSIDASES 1978-90)
Date Introduced
1991/01/01
Last Updated
2016/07/05
beta-Galactosidase Preferred
beta-Galactosidase A2 Narrower
beta-Galactosidase A3 Narrower
Lactaid Narrower
Dairyaid Narrower
Lactogest Narrower
beta-Galactosidase A1 Narrower
Lactrase Narrower
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