A method for the determination of glucose-6-phosphatase activity in rat liver with [U-14C]glucose 6-phosphate as substrate
β Scribed by S.A. Kitcher; K. Siddle; J.P. Luzio
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 414 KB
- Volume
- 88
- Category
- Article
- ISSN
- 0003-2697
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β¦ Synopsis
A method is described for measuring the activity of glucose-6-phosphatase (EC 3.1.3.9) in rat liver. [U-W]Glucose 6-phosphate, as substrate, is converted by the enzyme to [Ylglucose and inorganic phosphate. The addition of ZnSO, and Ba(OH), at the end of the reaction precipitates phosphate and the unreacted [Wlglucose 6-phosphate, whereas [Ylglucose is not precipitated. After centrifugation, the amount of [Ylglucose formed is determined in a liquid scintillation counter.
π SIMILAR VOLUMES
A sensitive and rapid spectrophotometric method for determination of glucose-6-phosphatase activity is described. Glucose formed by the enzyme is oxidized by glucose oxidase to gluconolactone and hydrogen peroxide. The latter, phenol, and 4-aminoantipyrine are converted by peroxidase to quinoneimine