Literature summary extracted from

Hall, J.C.; Jacobetz, D.R.; LaMarche, M.D.; Kochins, J.G.; Tubbs, C.E.
Purification, characterization, and expression of rat epididymal beta-D-galactosidase (1997), Biochem. Mol. Biol. Int., 42, 443-451.

KM Value [mM]

EC Number	KM Value [mM]	KM Value Maximum [mM]	Substrate	Comment	Organism	Structure
3.2.1.23	0.024	-	p-nitrophenyl-beta-D-galactoside	enzyme from corpus region	Rattus norvegicus
3.2.1.23	0.059	-	p-nitrophenyl-beta-D-galactoside	enzyme from cauda region	Rattus norvegicus
3.2.1.23	0.067	-	p-nitrophenyl-beta-D-galactoside	enzyme from caput region	Rattus norvegicus

Molecular Weight [Da]

EC Number	Molecular Weight [Da]	Molecular Weight Maximum [Da]	Comment	Organism
3.2.1.23	50000	-	x * 50000, enzyme from corpus region, SDS-PAGE	Rattus norvegicus
3.2.1.23	66000	-	enzyme from corpus, pH 7.0, gel filtration	Rattus norvegicus
3.2.1.23	85000	-	x * 85000, enzyme from caput and cauda, SDS-PAGE	Rattus norvegicus
3.2.1.23	89000	-	enzyme from caput and cauda, pH 7.0, gel filtration	Rattus norvegicus
3.2.1.23	220000	-	enzyme from corpus region, at pH 4.5, gel filtration	Rattus norvegicus
3.2.1.23	347000	-	enzyme from caput and cauda region, at pH 4.5, gel filtration	Rattus norvegicus

Organism

EC Number	Organism	UniProt	Comment	Textmining
3.2.1.23	Rattus norvegicus	-	-	-

Purification (Commentary)

EC Number	Purification (Comment)	Organism
3.2.1.23	-	Rattus norvegicus

Source Tissue

EC Number	Source Tissue	Comment	Organism	Textmining
3.2.1.23	epididymis	caput, corpus and cauda region	Rattus norvegicus	-

Specific Activity [micromol/min/mg]

EC Number	Specific Activity Minimum [µmol/min/mg]	Specific Activity Maximum [µmol/min/mg]	Comment	Organism
3.2.1.23	1.973	-	-	Rattus norvegicus

Substrates and Products (Substrate)

EC Number	Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
3.2.1.23	p-nitrophenyl-beta-D-galactoside + H2O	-	Rattus norvegicus	p-nitrophenol + beta-D-galactose	-	?

Subunits

EC Number	Subunits	Comment	Organism
3.2.1.23	?	x * 50000, enzyme from corpus region, SDS-PAGE	Rattus norvegicus
3.2.1.23	?	x * 85000, enzyme from caput and cauda, SDS-PAGE	Rattus norvegicus

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Release 2023.1 (January 2023)