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首页> 外文期刊>Phytochemical Analysis >An HPLC method for the assay of UDP-glucose pyrophosphorylase andUDP-glucose-4-epimerase in Solieria chordalis (Rhodophyceae)
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An HPLC method for the assay of UDP-glucose pyrophosphorylase andUDP-glucose-4-epimerase in Solieria chordalis (Rhodophyceae)

机译:HPLC法测定脊索菜中的UDP-葡萄糖焦磷酸化酶和UDP-葡萄糖-4-表观酶

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摘要

An efficient method to assay both UDP-glucose pyrophosphorylase and UDP-glucose-4-epimerase in a crude extract of the red seaweed, Solieria chordalis is described. The method is based on the direct quantification by reverse-phase high-performance liquid chromatography of the UDP-sugars generated in the reaction mixture. UDP-glucose, UDP-galactose and UTP were detected by spectrophotometry at 254 mn and their recoveries ranged from 97 to 100%. In the course of the reaction, a correlation was observed between the reduction in the area of the substrate peak and the occurrence of product peak(s). This highly reproducible method for enzyme assay is fast since no intermediate reaction mixture is required.
机译:描述了一种有效的方法,可用于测定红海藻(Solieria chordalis)粗提物中的UDP-葡萄糖焦磷酸化酶和UDP-葡萄糖-4-表异构酶。该方法基于通过反相高效液相色谱法直接定量反应混合物中产生的UDP糖。用分光光度法在254 mn处检测到UDP-葡萄糖,UDP-半乳糖和UTP,回收率在97%至100%之间。在反应过程中,观察到底物峰面积的减少与产物峰的出现之间的相关性。由于不需要中间反应混合物,因此这种用于酶测定的高度可重复的方法快速。

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