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Literature summary for 2.4.1.90 extracted from

  • Ishii, T.; Ohnishi-Kameyama, M.; Ono, H.
    Identification of elongating beta-1,4-galactosyltransferase activity in mung bean (Vigna radiata) hypocotyls using 2-aminobenzaminated 1,4-linked beta-D-galactooligosaccharides as acceptor substrates (2004), Planta, 219, 310-318.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
Triton X-100 required for maximal activity at 0.75% w/v Vigna radiata

Inhibitors

Inhibitors Comment Organism Structure
Cu2+
-
Vigna radiata
Zn2+
-
Vigna radiata

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.02
-
2-aminobenzaminated 1,4-linked beta-D-galactoheptaose pH 6.5, 25°C Vigna radiata
0.032
-
UDP-galactose pH 6.5, 25°C Vigna radiata

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
Vigna radiata 16020
-
microsome
-
Vigna radiata
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ slight activation Vigna radiata
Co2+ activates, not as effective as Mn2+ Vigna radiata
Mg2+ activates, not as effective as Mn2+ Vigna radiata
Mn2+ required for maximal activity at 25 mM Vigna radiata

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-galactose + N-acetyl-D-glucosamine Vigna radiata
-
UDP + N-acetyllactosamine
-
?

Organism

Organism UniProt Comment Textmining
Vigna radiata
-
at least 2 isoforms
-

Source Tissue

Source Tissue Comment Organism Textmining
hypocotyl
-
Vigna radiata
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information no activity with penta- and heptasaccharides generated from rhamnogalacturonan I, product determination by mass spectrometry, NMR, and enzymatic digestion analysis Vigna radiata ?
-
?
UDP-galactose + 2-aminobenzaminated 1,4-linked beta-D-galactoheptaose fluorogenic synthetic acceptor substrate, elongation at the reducing end Vigna radiata UDP + 2-aminobenzaminated 1,4-linked beta-D-galactooctaose
-
?
UDP-galactose + 2-aminobenzaminated 1,4-linked beta-D-galactohexaose fluorogenic synthetic acceptor substrate, elongation at the reducing end Vigna radiata UDP + 2-aminobenzaminated 1,4-linked beta-D-galactoheptaose
-
?
UDP-galactose + 2-aminobenzaminated 1,4-linked beta-D-galactooligosaccharides fluorogenic synthetic acceptor substrates, enzyme transfers up to 8 galactose residues to the nonreducing ends of forming beta-1,4-linkages Vigna radiata UDP + ?
-
?
UDP-galactose + 2-aminobenzaminated 1,4-linked beta-D-galactopentaose fluorogenic synthetic acceptor substrate, elongation at the reducing end Vigna radiata UDP + 2-aminobenzaminated 1,4-linked beta-D-galactohexaose
-
?
UDP-galactose + 2-aminobenzaminated 1,4-linked beta-D-galactotetraose fluorogenic synthetic acceptor substrate, elongation at the reducing end Vigna radiata UDP + 2-aminobenzaminated 1,4-linked beta-D-galactopentaose
-
?
UDP-galactose + N-acetyl-D-glucosamine
-
Vigna radiata UDP + N-acetyllactosamine
-
?

Synonyms

Synonyms Comment Organism
beta1,4-galactosyltransferase
-
Vigna radiata
beta4Gal-T
-
Vigna radiata

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
20
-
-
Vigna radiata

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.5
-
-
Vigna radiata