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G5758

Sigma-Aldrich

Glucose-6-Phosphatase from rabbit liver

≥0.05 units/mg protein, Protein ~30 % (balance mostly sucrose)

Synonym(s):

D-Glucose-6-Phosphate Phosphohydrolase

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About This Item

CAS Number:
Enzyme Commission number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

powder with sucrose

specific activity

≥0.05 units/mg protein

composition

Protein, ~30% (balance mostly sucrose)

storage temp.

−20°C

General description

Glucose-6-phosphatase is a multicomponent protein complex comprising of glucose-6-phosphate transporter (G6PT) and a catalytic unit (G6PC).[1] Liver and kidney cells show predominant expression of glucose-6-phosphatase.[2]

Application

Glucose-6-Phosphatase from rabbit liver has been used in glucose 6-phosphatase inhibitory assay of crude C. anisata leaf extracts[3] and methanolic leaf and bark extracts of Dolichandrone atrovirens.[4]
Glucose-6-Phosphatase was used to study the effects of Clausena anisata (Wild hook leaf) extracts on selected diabetes-related metabolizing enzymes.[5]

Biochem/physiol Actions

Glucose-6-Phosphatase is crucial for regulating glucose homeostasis during starvation.[6] Deficiency of glucose-6-phosphatase is implicated in glycogen storage disease type I (GSDI).[7]
Glucose-6-phosphatase catalyzes the conversion of glucose-6-phosphate into glucose as the last step of gluconeogenesis.[8][9]

Other Notes

It has been reported that glucose-6-phosphatase, inorganic pyrophosphatase, and pyrophosphate glucose phosphotransferase are associated with a single protein that catalyzes three different reactions:
a) glucose 6-phosphate + H2O → glucose + Pi
b) PPi + H2O → 2 Pi
c) glucose + PPi or nucleoside-DP or -TP → glucose 6-phosphate + Pi or nucleoside-MP.

Quality

Crude microsomal preparation

Unit Definition

One unit will release 1.0 μmole of inorganic phosphate from glucose 6-phosphate per min at pH 6.5 at 37 °C.

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)


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Glucose-6-phosphatase deficiency
Froissart R, et al.
Orphanet Journal of Rare Diseases, 6(1), 27-27 (2011)
Glucotoxicity Induces Glucose-6-Phosphatase Catalytic Unit Expression by Acting on the Interaction of Hypoxia Inducible Factor-1alpha With cAMP-Responsive Element-Binding Protein-Binding Protein
Gautier-Stein A, et al.
Diabetes, DB_110986-DB_110986 (2012)
Emile van Schaftingen et al.
The Biochemical journal, 362(Pt 3), 513-532 (2002-03-07)
Glucose-6-phosphatase (G6Pase), an enzyme found mainly in the liver and the kidneys, plays the important role of providing glucose during starvation. Unlike most phosphatases acting on water-soluble compounds, it is a membrane-bound enzyme, being associated with the endoplasmic reticulum. In
Loranne Agius
Biochemical pharmacology, 85(3), 306-312 (2012-10-02)
In population studies hepatic steatosis in subjects with Non-alcoholic fatty liver disease (NAFLD) is strongly associated with insulin resistance. This association has encouraged debate whether hepatic steatosis is the cause or the consequence of hepatic insulin resistance? Although genome-wide studies
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Asian Pacific journal of tropical medicine, 5(11), 875-881 (2012-11-14)
To investigate the hypoglycemic effect of the aqueous extract of Octomeles sumatrana (O. sumatrana) (OS) in streptozotocin-induced diabetic rats (STZ) and its molecular mechanisms. Diabetes was induced by intraperitoneal (i.p.) injection of streptozotocin (55 mg/kg) in to male Sprague-Dawley rats.

Protocols

To measure glucose-6-phosphatase activity, the Taussky-Shorr method is used. This method is a spectrophotometric stop-rate determination assay that is measured at 660 nm.

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