xylulose

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xylulose

 [zi´lu-lōs]
a pentose sugar occurring as d-xylulose and l-xylulose, one of the few l sugars found in nature; it is sometimes excreted in the urine (see pentosuria).

xy·lu·lose

(zī'lū-lōs),
threo-Pentulose; a 2-ketopentose. l-Xylulose appears in the urine in cases of essential pentosuria; it is also an intermediate in the glucuronate pathway.
Synonym(s): xyloketose

xy·lu·lose

(zī'lyū-lōs)
Threo-pentulose; a ketopentose that appears in the urine in cases of essential pentosuria; it is also an intermediate in the glucuronate pathway.
Xyluloseclick for a larger image
Fig. 317 Xylulose . Molecular structure of D-xylulose.

xylulose

a 5-CARBON KETOSE sugar.

xy·lu·lose

(zī'lyū-lōs)
A 2-ketopentose that appears in urine in patients with essential pentosuria; it is also an intermediate in the glucuronate pathway.
References in periodicals archive ?
The fungal pathway needs five enzymes including aldose reductase (AR), L-arabinitol-4-dehydrogenase (LAD), L-xylulose reductase (LXR), D-xylulose reductase (XDH), and xylulokinase (XK) [19-21].
Fermentation of D-xylose by yeasts using glucose isomerase in the medium to convert D-xylose to D-xylulose, Biotechnology Letters, 2: 273-278.
Xylose isomerase gene as a marker in transgenic plants: Most plant species are unable to metabolize D- xylose while they can utilize D-xylulose because they express a xylulokinase.
Optimization of enzyme ratios in a co-immobilized enzyme reactor for the analysis of D-xylose and D-xylulose in a flow system Enzy.
The following sugar phosphates were purchased from Sigma-Aldrich: DHAP, D-erythrose 4-phosphate (ery-4P), D-fructose 6-phosphate (fru-6P), D,L-glyceraldehyde 3-phosphate (gly-3P), D-ribose 5-phosphate (ribo-5P), D-ribulose 5-phosphate (ribu-5P), D-sedoheptulose 7-phosphate (sed-7P), and D-xylulose 5-phosphate (xylu-5P).