Isolation of Uridine 5′-Pyrophosphate Glucuronic Acid Pyrophosphorylase and Its Assay Using 32P-Pyrophosphate
Author(s) -
David B. Dickinson,
David Hyman,
Jorge W. Gonzales
Publication year - 1977
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.59.6.1082
Subject(s) - pyrophosphate , uridine , glucuronic acid , chemistry , uridine triphosphate , adenosine triphosphate , biochemistry , farnesyl pyrophosphate , chromatography , adsorption , enzyme , nucleotide , organic chemistry , biosynthesis , rna , polysaccharide , gene
A procedure was devised to detect and assay uridine 5'-pyrophosphate (UDP)-glucuronic acid pyrophosphorylase in plant extracts. Substrates are UDP-glucuronic acid and (32)P-pyrophosphate, and the (32)P-uridine 5'-triphosphate produced is selectively adsorbed to charcoal. The charcoal adsorption procedure is a modification of that used to determine (32)P-adenosine 5'-triphosphate produced by adenosine 5'-pyrophosphate glucose pyrophosphorylase, and the modification greatly improves the retention of uridine 5'-triphosphate.
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