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The glucose oxidase enzyme (GOx or GOD) also known as notatin (EC number 1.1.3.4) is an oxidoreductase that catalyses the oxidation of glucose to hydrogen peroxide and D-glucono-δ-lactone. This enzyme is produced by certain species of fungi and insects and displays antibacterial activity when oxygen and glucose are present.
Older terms for glycerol-3-phosphate dehydrogenase include alpha glycerol-3-phosphate dehydrogenase (alphaGPDH) and glycerolphosphate dehydrogenase (GPDH). However, glycerol-3-phosphate dehydrogenase is not the same as glyceraldehyde 3-phosphate dehydrogenase (GAPDH), whose substrate is an aldehyde not an alcohol.
A colorless solid, it is an oxidized derivative of glucose. It is typically produced by the aerobic oxidation of glucose in the presence of the enzyme glucose oxidase. The conversion cogenerates hydrogen peroxide, which is often the key product of the enzyme: C 6 H 12 O 6 + O 2 → C 6 H 10 O 6 + H 2 O 2
The quinone is red-violet in colour, [3] [5] with the intensity of the colour being in proportion to the glucose concentration. [3] The colour is measured at 505 nm, [2] 510 nm, [4] or 540 nm. [3] Diagnostic kits containing the Trinder reagent are available, including one from Sigma-Aldrich. [2]
Glycerol-1-phosphatase catalyzes the hydrolysis of glycerol 3-phosphate to regenerate glycerol, allowing glycerol fermentation to produce glycerol from glucose through glycolysis pathway. A number of organisms express this enzyme. [2] + H 2 O → + Pi
In enzymology, a glucose-fructose oxidoreductase (EC 1.1.99.28) is an enzyme that catalyzes the chemical reaction. D-glucose + D-fructose D-gluconolactone + D-glucitol. Thus, the two substrates of this enzyme are D-glucose and D-fructose, whereas its two products are D-gluconolactone and D-glucitol.
In enzymology, 3-hydroxybutyrate dehydrogenase (EC 1.1.1.30) is an enzyme that catalyzes the chemical reaction: ()-3-hydroxybutanoate + NAD + acetoacetate + NADH + HThus, the two substrates of this enzyme are ()-3-hydroxybutanoate and NAD +, whereas its three products are acetoacetate, NADH, and H +.
Other names in common use include gluconate oxidase, gluconate dehydrogenase, gluconic dehydrogenase, D-gluconate dehydrogenase, gluconic acid dehydrogenase, 2-ketogluconate reductase, D-gluconate dehydrogenase, 2-keto-D-gluconate-yielding, and D-gluconate:(acceptor) 2-oxidoreductase.