产品描述:
在存在无机磷酸盐MESG条件下,通过嘌呤核苷磷酸化酶(EC 2•4•2•1)作用将MESG转化成2-氨基-6-硫基-7-甲基嘌呤,同时伴随着吸收光波长转移至红色。我们根据这种特性,开发了一种使用方便的MESG磷酸盐检测试剂盒。PhosphoWorks 比色法MESG磷酸盐检测试剂盒 *UV吸收* 提供所有必需试剂,包括MESG、磷酸盐和反应缓冲液。这种MESG底物在360nm处光吸收增强,在PH6·5~8·5时磷酸分解,在PH7·6时,改变的淬灭系数是11,000 M-1cm-1。本检测法可以对溶液中浓度低至2 礛的磷酸盐进行定量。它可以用来测定磷酸酶(例如 GTPases 和 ATPases)释放磷酸盐的动力学,通过偶联的两种酶促反应。
产品用途:
用于ATP酶和GTP酶活性的测定
用于药物开发和高通量筛选ATP酶或GTP酶YZ剂。
产品英文注释:
In the presence of inorganic phosphate MESG is converted to 2-amino-6-mercapto-7-methlpurine by purine nucleoside phosphorylase (EC 2.4.2.1) with absorption wavelength shift to red. This feature has been used to develop our convenient MESG phosphate assay kit. Our kit provides all the essential reagents including MESG, phosphorylase and reaction buffer. The MESG substrate gives an absorbance increase at 360 nm on phosphorylysis at pH 6.5-8.5, and at pH 7.6 the change in extinction coefficient is 11,000 M-1cm-1. The assay is shown to quantitate phosphate in solution at concentrations at least down to 2.It can be used to measure the kinetics of phosphate release from phosphatases (such as GTPases and ATPases) by coupling the two enzymatic reactions.
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