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Reference: Charmantray F, et al. (2010) Fluorogenic substrates for the screening assay of transketolase through beta-elimination of umbelliferone--Development, scope and limitations. J Biotechnol 145(4):359-66

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Abstract

5-O-Coumarinyl-d-xylulose was studied as a fluorogenic substrate for the stereospecific assay of transketolase enzyme. Enzymatic C2-C3 cleavage released an alpha-hydroxyl, beta-coumarinyl substituted aldehyde. Although the subsequent beta-elimination step was rate limiting under chemical or enzymatic catalysis, we detected a TK activity as low as 0.7mIU. To improve the fluorescence signal release, kinetic and product distribution analyses of this reaction were performed by LC/UV/MS coupling.CI - Copyright 2010 Elsevier B.V. All rights reserved.

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Journal Article
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Charmantray F, Legeret B, Helaine V, Hecquet L
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