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Merck

G6637

β-Galactose Dehydrogenase from Pseudomonas fluorescens

recombinant, expressed in E. coli, ammonium sulfate suspension, ≥50 units/mg protein (biuret)

Synonym(s):

D-Galactose:NAD+ 1-oxidoreductase

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About This Item

CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-837-4
MDL number:
EC Number:
Specific activity:
≥50 units/mg protein (biuret)
Assay:
0.5—2.0 mg protein/mL (biuret)
Biological source:
Pseudomonas fluorescens
Recombinant:
expressed in E. coli
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biological source

Pseudomonas fluorescens

recombinant

expressed in E. coli

assay

0.5—2.0 mg protein/mL (biuret)

form

ammonium sulfate suspension

specific activity

≥50 units/mg protein (biuret)

color

white

suitability

suitable for enzyme test

application(s)

life science and biopharma

shipped in

wet ice

storage temp.

2-8°C

Quality Level

Gene Information

Pseudomonas fluorescens ... gdh(533113295)

Application

β-Galactose Dehydrogenase from Pseudomonas fluorescens has been used for competitive inhibition in lectin histochemistry. It has also been used to measure the hydrolysis activity of Haloferax alicantei β-galactosidase on different disaccharides.

Biochem/physiol Actions

β-galactose dehydrogenase catalyzes the oxidation of β-D-galactose to D-galactono-gammalactone.

Physical form

Suspension in 3.2 M (NH4)2SO4, pH approx. 6.0

Other Notes

One unit will convert 1.0 μmole of D-galactose to D-galactonate per min at pH 8.6 at 25 °C.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Optimizing the enzymatic determination of galactose in the culture medium of rat liver and HepG2 cell spheroids.
Jinsheng Xu et al.
Analytical biochemistry, 311(2), 179-181 (2002-12-10)
Takahiro Mieda et al.
Plant & cell physiology, 45(9), 1271-1279 (2004-10-29)
We have studied the enzymological properties of L-galactose dehydrogenase (l-GalDH), a key enzyme in the biosynthetic pathway of l-ascorbate (AsA) in plants. L-GalDH was purified approximately 560-fold from spinach leaves. The enzyme was a homodimer with a subunit mass of
U G Jensen et al.
Clinical chemistry, 47(8), 1364-1372 (2001-07-27)
Classic galactosemia (OMIM 230400) is an inherited disorder in the metabolism of galactose caused by deficiency of the enzyme galactose 1-phosphate uridyl transferase (EC 2.7.7.12). Galactosemia leads to accumulation of galactose and galactose 1-phosphate (gal-1-P) in blood and tissues and
D K Leung et al.
Proceedings of the National Academy of Sciences of the United States of America, 97(10), 5050-5053 (2000-05-11)
Beta-cyclodextrin (CD) dimers (n = 11) were synthesized and tested against eight enzymes, seven of which were dimeric or tetrameric, for inhibitor activity. Initial screening showed that only L-lactate dehydrogenase and citrate synthase were inhibited but only by two specific
M L Holmes et al.
Biochimica et biophysica acta, 1337(2), 276-286 (1997-02-08)
As a first step in the development of a reporter system for gene expression in halophilic archaea, a beta-galactosidase was purified 140-fold from Haloferax alicantei (previously phenon K, strain Aa2.2). An overproducing mutant was first isolated by UV mutagenesis and

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