A rapid enzymic procedure for the determination of picomole amounts of UDP-glucuronic acid

Abstract
A simple microassay for the determination of UDP-glucuronic acid was developed on the basis of the formation of benzo[a]pyrene 3-glucuronide catalyzed by UDP-glucuronyltransferase of guinea-pig liver. As little as 1-5 pmol of UDP-glucuronic acid was detectable in extracts of heat-denatured probes of liver or cultured cells equivalent to 10-50 .mu.g of cellular protein.