The invention relates to a method of detecting and/or assaying nucleoside hydrolases or nucleoside phosphorylases using a chromogenic substrate. Preferred chromogenic substrates have formula (I) where X is OH, or H, and Y is the residue of Y—OH where Y—OH is a chromophore or a compound readily converted to a chromophore and the substrates are hydrolysed by the nucleoside hydrolase to yield ribose or 2-deoxyribose plus Y—OH. Alternatively those substrates may be phosphorylysed by nucleoside phosphorylase to yield ribose-1-phosphate plus Y—OH. The methods may be used to detect and/or assay parasites in biological samples.
1
本发明涉及使用显色底物检测和/或测定核苷酸酶或核苷酸
磷酸酶的方法。首选显色底物具有公式(I),其中X是OH或H,Y是Y-OH残基,其中Y-OH是一种色团或易于转化为色团的化合物,底物通过核苷酸酶
水解产生
核糖或2-去氧
核糖加上Y-OH。或者,这些底物可被核苷酸
磷酸酶
磷酸化,形成
核糖1-
磷酸加上Y-OH。该方法可用于检测和/或测定
生物样品中的寄生虫。