G5507

Galactosyltransferase from bovine milk

lyophilized powder

• Sinónimos: Lactose Synthase, UDP-galactose:D-glucose 4-β-galactosyltransferase
• Número de CAS: 9031-68-9
• Comisión internacional de enzimas: 2.4.1.22 (BRENDA, IUBMB)
• MDL number: MFCD00131122
• UNSPSC Code: 12352204
• NACRES: NA.54

Propiedades

• form: lyophilized powder
• Quality Level: 200
• specific activity: 3.0-15.0 units/mg protein (in the presence of adequate α-lactalbumin, without added α-lactalbumin the activity is zero)
• composition: Protein, 35-65% modified Warburg-Christian
• impurities: ≤10 % protein α-lactalbumin
• storage temp.: −20°C

Descripción

General description

Research area: Cell signalling. Galactosyltransferase(GalT) is found in both prokaryotes and eukaryotes.Galactosyltransferases belong to the galactosyltransferase family and are anchored to the membrane of Golgi through their N-terminal region.

Application

Galactosyltransferase from bovine milk has been used:

• in the generation of hyper-galactosylated variant of IgG1
• in β -1,4-galactosyltransferase assay rice root cell extracts
• in the modification of LacNAcQ11 and LacDiNAcQ11 nanofibers

Galactosyltransferase is the catalytic component of the lactose synthetase system; it synthesizes lactose slowly in the absence of the regulatory protein α-lactalbumin. Galactosyltransferase will also transfer galactose from UDP-galactose to N-acetylglucosamine. This preparation is useful in the determination of α-lactalbumin, UDP-galactose, and N-acetylglucosamine.

Biochem/physiol Actions

Galactosyltransferase catalyzes the transfer of galactosyl molecules in the synthesis of oligosaccharides.

Galactosyltransferase from bovine milk requires Mn²⁺ ions for its catalytic functionality. Alteration in the galactosyltransferase levels have been implicated in various disease states.Galactosyltransferase(GalT) functions either as a soluble enzyme or as membrane-bound moieties.

Linkage

This is probably the same enzyme as N-acetyllactosamine synthetase, EC 2.4.1.38 and EC 2.4.1.90.

Unit Definition

One unit will transfer 1.0 μmole of galactose from UDP-galactose to D-glucose per min at pH 8.4 at 30 °C in the presence of 0.2 mg α-lactalbumin per mL of reaction mixture. (without added α-lactalbumin the activity is zero)

Physical form

Lyophilized powder containing Tris, EDTA, and (NH₄)₂SO₄

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)