T. Wood, A. Gascón
Sep 1, 1980
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0
Influential Citations
8
Citations
Quality indicators
Journal
Archives of biochemistry and biophysics
Abstract
Abstract The reported conversion of d -arabinose 5-phosphate to d -ribose 5-phosphate and other intermediates of the pentose phosphate pathway was investigated. Two new solvent systems to separate the two aldopentose phosphates on paper and a method using chromatography on a column of dihydroxyboryl-cellulose were developed. No evidence for their interconversion could be obtained. d -Arabinose 5-phosphate did not serve as an acceptor for transketolase from bakers' yeast, Candida utilis , or rat liver but behaved as an inhibitor. d -Glucose 6-phosphate acted both as an acceptor and as an inhibitor of the reaction with d -ribose 5-phosphate as acceptor. d -Arabinose 5-phosphate was not converted into ribose 5-phosphate, ketopentose phosphate, triose phosphate, or a heptulose phosphate by rat muscle or rat liver enzymes. Hydroxypyruvate is suggested not to be a substrate for rat liver transketolase.