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Literature summary for 2.4.1.38 extracted from

  • Pisvejcova, A.; Rossi, C.; Husakova, L.; Kren, V.; Riva, S.; Monti, D.
    beta-1,4-Galactosyltransferase-catalyzed glycosylation of sugar derivatives: Modulation of the enzyme activity by alpha-lactalbumin, immobilization and solvent tolerance (2006), J. Mol. Catal. B, 39, 98-104.
No PubMed abstract available

Protein Variants

Protein Variants Comment Organism
additional information covalent immobilization of the enzyme in the absence of alpha-lactalbumin for use as biocatalyst, method evaluation, overview Bos taurus

Inhibitors

Inhibitors Comment Organism Structure
alpha-lactalbumin inhibits the reaction of EC 2.4.1.38 with the complex glucoside colchicoside Bos taurus

Localization

Localization Comment Organism GeneOntology No. Textmining
extracellular
-
Bos taurus
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Mn2+
-
Bos taurus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-galactose + N-acetyl-beta-D-glucosaminylglycopeptide Bos taurus
-
UDP + beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminylglycopeptide
-
?

Organism

Organism UniProt Comment Textmining
Bos taurus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
milk
-
Bos taurus
-

Storage Stability

Storage Stability Organism
4°C, immobilized, 5 weeks, stable Bos taurus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information substrate specificity in presence or absence of alpha-lactalbumin, overview, the 'specifier' protein alpha-lactalbumin, which interacts with beta-1,4-GalT forming the lactose synthase complex, EC 2.4.1.2 and changing the substrate specificity to the reaction of EC 2.4.1.90, alpha-lactalbumin is not necessary when the acceptors are different glucopyranosides and, in some cases, it can even have an inhibitory effect, e.g. in reaction with the complex glucosides ginsenoside Rg1 and colchicoside, overview, in absence of alpha-lactalbumin, the enzyme is not active with glucose as acceptor Bos taurus ?
-
?
UDP-galactose + colchicoside
-
Bos taurus UDP + beta-D-galactosyl-1,4-colchicoside
-
?
UDP-galactose + ginsenoside Rg1
-
Bos taurus UDP + beta-D-galactosyl-1,4-ginsenoside Rg1
-
?
UDP-galactose + N-acetyl-beta-D-glucosaminylglycopeptide
-
Bos taurus UDP + beta-D-galactosyl-1,4-N-acetyl-beta-D-glucosaminylglycopeptide
-
?
UDP-galactose + N-acetylglucosamine
-
Bos taurus UDP + N-acetyllactosamine
-
?

Synonyms

Synonyms Comment Organism
beta-1,4-galactosyltransferase
-
Bos taurus
beta-1,4-GalT
-
Bos taurus
More cf. EC 2.4.1.90 Bos taurus

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30 37 assay at Bos taurus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.4
-
assay at Bos taurus