5-Keto-d-fructose
نویسندگان
چکیده
منابع مشابه
Preparation of enzymes required for enzymatic quantification of 5-keto-D-gluconate and 2-keto-D-gluconate.
For easy measurement of 5-keto D-gluconate (5KGA) and 2-keto D-gluconate (2KGA), two enzymes, 5KGA reductase (5KGR) and 2KGA reductase (2KGR) are useful. The gene for 5KGR has been reported, and a corresponding gene was found in the genome of Gluconobacter oxydans 621H and was identified as GOX2187. On the other hand, the gene for 2KGR was identified in this study as GOX0417 from the N-terminal...
متن کاملObservation of the keto tautomer of D-fructose in D(2)O using (1)H NMR spectroscopy.
D-Fructose was analysed by NMR spectroscopy and previously unidentified (1)H NMR resonances were assigned to the keto and α-pyranose tautomers. The full assignment of shifts for the various fructose tautomers enabled the use of (1)H NMR spectroscopy in studies of the mutarotation (5-25°C) and tautomeric composition at equilibrium (5-50°C). The mutarotation of β-pyranose to furanose tautomers in...
متن کاملThe conversion of D-glucose to 5-keto-6-deoxy-D-arabohexose.
Hygromycin A is interesting from the standpoint of the previously undescribed sugar it contains, 5-keto-6-deoxy-n-arabohexose (2,3). The pathway of biosynthesis of this compound is unknown. In this study, Streptomyces hygroscopicus was grown in the presence of specifically labeled glucose, and the distribution of radioactivity in the 5-keto-6-deoxy-n-arabohexose of hygromycin A was determined. ...
متن کاملSucrose/D-Glucose/ D-Fructose
1. Bottle 1 with approx. 0.5 g lyophilizate, consisting of: citrate buffer, pH approx. 4.6; β-fructosidase, approx. 720 U 2. Bottle 2 with approx. 7.2 g powder mixture, consisting of: triethanolamine buffer, pH approx. 7.6; NADP, approx. 110 mg; ATP, approx. 260 mg; magnesium sulfate 3. Bottle 3 with approx. 1.1 ml suspension, consisting of: hexokinase, approx. 320 U; glucose-6-phosphate dehydr...
متن کاملIdentification and characterization of two new 5-keto-4-deoxy-D-Glucarate Dehydratases/Decarboxylases
BACKGROUND Hexuronic acids such as D-galacturonic acid and D-glucuronic acid can be utilized via different pathways within the metabolism of microorganisms. One representative, the oxidative pathway, generates α-keto-glutarate as the direct link entering towards the citric acid cycle. The penultimate enzyme, keto-deoxy glucarate dehydratase/decarboxylase, catalyses the dehydration and decarboxy...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1970
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)63237-5