D-Xylulose
D-Xylulose structure
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Common Name | D-Xylulose | ||
|---|---|---|---|---|
| CAS Number | 551-84-8 | Molecular Weight | 150.130 | |
| Density | 1.7±0.1 g/cm3 | Boiling Point | 364.2±42.0 °C at 760 mmHg | |
| Molecular Formula | C5H10O5 | Melting Point | N/A | |
| MSDS | Chinese USA | Flash Point | 174.1±27.9 °C | |
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Colorimetric determination of fructose for the high-throughput microtiter plate assay of glucose isomerase.
Biosci. Biotechnol. Biochem. 79 , 1057-60, (2015) A colorimetric method for the reducing monosaccharide determination is optimized for the assay of glucose isomerase, which converts glucose (Glc) to fructose (Fru). Test solution was mixed with 20-fold volume of the 50 mM Na2SiO3, 600 mM Na2MoO4, and 0.95 M H... |
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Construction and co-expression of plasmid encoding xylitol dehydrogenase and a cofactor regeneration enzyme for the production of xylitol from D-arabitol.
Enzyme Microb. Technol. 51(2) , 119-24, (2012) The biotransformation of D-arabitol into xylitol was investigated with focus on the conversion of D-xylulose into xylitol. This critical conversion was accomplished using Escherichia coli to co-express a xylitol dehydrogenase gene from Gluconobacter oxydans a... |
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Cloning and characterization of a novel NAD+ -dependent xylitol dehydrogenase from Gluconobacter oxydans CGMCC 1. 637.
Wei Sheng Wu Xue Bao 52(6) , 726-35, (2012) To clone the xylitol dehydrogenase gene from Gluconobacter oxydans CGMCC 1.637, to characterize enigmatic properties of xylitol dehydrogenase and to investigate the induction abilities of various carbon sources on the oxidative activity of xylitol dehydrogena... |
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Exploratory experiments on the chemistry of the "glyoxylate scenario": formation of ketosugars from dihydroxyfumarate.
J. Am. Chem. Soc. 134(7) , 3577-89, (2012) In the context of a "glyoxylate scenario" of primordial metabolism, the reactions of dihydroxyfumarate (DHF) with reactive small molecule aldehydes (e.g., glyoxylate, formaldehyde, glycolaldehyde, and glyceraldehyde) in water were investigated and shown to fo... |
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Gene cloning and characterization of L-ribulose 3-epimerase from Mesorhizobium loti and its application to rare sugar production.
Biosci. Biotechnol. Biochem. 77(3) , 511-5, (2013) A gene encoding L-ribulose 3-epimerase (L-RE) from Mesorhizobium loti, an important enzyme for rare sugar production by the Izumoring strategy, was cloned and overexpressed. The enzyme showed highest activity toward L-ribulose (230 U/mg) among keto-pentoses a... |
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Insights into the isomerization of xylose to xylulose and lyxose by a Lewis acid catalyst.
Carbohydr. Res. 368 , 89-95, (2013) We present electronic structure calculations on the isomerization and epimerization of xylose to xylulose and lyxose, respectively, by a zeolite Sn-BEA model at the MP2 and B3LYP theory levels. Benchmarking calculations at the CCSD(T) theory level are also pr... |
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Alteration of xylose reductase coenzyme preference to improve ethanol production by Saccharomyces cerevisiae from high xylose concentrations.
Bioresour. Technol. 102(19) , 9206-15, (2011) A K270R mutation of xylose reductase (XR) was constructed by site-direct mutagenesis. Fermentation results of the F106X and F106KR strains, which carried wild type XR and K270R respectively, were compared using different substrate concentrations (from 55 to 2... |
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Covalent immobilization of recombinant Rhizobium etli CFN42 xylitol dehydrogenase onto modified silica nanoparticles.
Appl. Microbiol. Biotechnol. 90(2) , 499-507, (2011) Rare sugars have many applications in food industry, as well as pharmaceutical and nutrition industries. Xylitol dehydrogenase (XDH) can be used to synthesize various rare sugars enzymatically. However, the immobilization of XDH has not been performed to impr... |
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Using neutron protein crystallography to understand enzyme mechanisms.
Acta Crystallogr. D Biol. Crystallogr. 66(Pt 11) , 1257-61, (2010) A description is given of the results of neutron diffraction studies of the structures of four different metal-ion complexes of deuterated D-xylose isomerase. These represent four stages in the progression of the biochemical catalytic action of this enzyme. A... |
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Hydrogen location in stages of an enzyme-catalyzed reaction: time-of-flight neutron structure of D-xylose isomerase with bound D-xylulose.
Biochemistry 47(29) , 7595-7, (2008) The time-of-flight neutron Laue technique has been used to determine the location of hydrogen atoms in the enzyme d-xylose isomerase (XI). The neutron structure of crystalline XI with bound product, d-xylulose, shows, unexpectedly, that O5 of d-xylulose is no... |