xylulose

(redirected from D-xylulose)

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

xylulose

/xy·lu·lose/ (zi´lu-lōs) a pentose epimeric with ribulose, occurring naturally as both l- and d-isomers. The latter is excreted in the urine in essential pentosuria; the former, in phosphorylated form, is an intermediate in the pentose phosphate pathway.

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.

xylulose (zil´yəlōs),

n a substance that appears in the urine of patients with essential pentosuria; its presence is diagnostic.

xylulose

a pentose sugar occurring as d-xylulose and as l-xylulose, one of the few l-sugars found in nature; it is sometimes excreted in the urine. See also pentosuria.
References in periodicals archive ?
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).