G6048
Galactokinase human
recombinant, expressed in E. coli
recombinant
expressed in E. coli
form
solution
specific activity
≥1400 unit/μg protein
mol wt
42 kDa
shipped in
dry ice
storage temp.
−70°C
Quality Level
General description
N-terminal GST-tagged 42 kDa full length protein
Biochem/physiol Actions
Galactokinase catalyzes the phosphorylation of αD-galactose to produce galactose-1-phosphate as part of the Leloir pathway.
Physical form
Supplied as a solution in 40 mM Tris-HCl, pH 8.0, 110 mM NaCl, 2.2 mM KCl, 20% glycerol, 3 mM DTT and 10-250 mM imidazole.
Other Notes
One unit will convert 1.0 picomole of galactose to galactose-1-phosphate per minute at pH 7.4 at 30 °C.
signalword
Danger
hcodes
Hazard Classifications
Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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Aurélie Egert et al.
Plant & cell physiology, 53(5), 921-929 (2012-03-23)
Galactokinase (GALK, EC 2.7.1.6) is a cytosolic enzyme with a wide occurrence across the taxonomic kingdoms. It catalyzes the phosphorylation of α-d-galactose (Gal) to α-d-Gal-1-P. The cytotoxicity of free (unphosphorylated) Gal is well documented in plants and causes marked defects.
Chieh Hsu et al.
Nature communications, 3, 682-682 (2012-02-23)
During evolution, genetic networks are rewired through strengthening or weakening their interactions to develop new regulatory schemes. In the galactose network, the GAL1/GAL3 paralogues and the GAL2 gene enhance their own expression mediated by the Gal4p transcriptional activator. The wiring
Nils Janzen et al.
Archives of medical research, 42(7), 608-612 (2011-12-14)
Galactokinase (GALK) deficiency is an autosomal recessive disorder causing cataract formation that can be prevented or mitigated by early diagnosis and galactose-restricted diet. The aim of this retrospective study was to explore whether GALK-deficiency meets the criteria for neonatal mass
Lei Li et al.
Carbohydrate research, 355, 35-39 (2012-05-29)
Galactokinase (GalK), particularly GalK from Escherichia coli, has been widely employed for the synthesis of sugar-1-phosphates. In this study, a GalK from Bifidobacterium infantis ATCC 15697 (BiGalK) was cloned and over-expressed with a yield of over 80 mg/L cell cultures.
Tali Lavy et al.
Genes & development, 26(3), 294-303 (2012-02-04)
A wealth of genetic information and some biochemical analysis have made the GAL regulon of the yeast Saccharomyces cerevisiae a classic model system for studying transcriptional activation in eukaryotes. Galactose induces this transcriptional switch, which is regulated by three proteins:
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