Spectrophotometric determination of inorganic phosphate in the presence of thiol compounds
โ Scribed by Susumu Yamato; Ikumi Sahara; Hisayoshi Sugihara; Kenji Shimada
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 323 KB
- Volume
- 158
- Category
- Article
- ISSN
- 0003-2697
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โฆ Synopsis
A spectrophotometric method for inorganic phosphate determination in the presence of thiol compounds is described. Thiol compounds, which interfere with the measurement of inorganic phosphate by a modification of the method of Gomori, are removed by carboxymethylation by iodoacetate prior to the formation and reduction of phosphomolybdate complex. A linear standard curve is obtained by this method, and the method is suitable for the assay of a phosphate-releasing enzyme when the measurement must be performed in the presence of thiol compounds. o 1986 Academic Press Inc.
๐ SIMILAR VOLUMES
During our studies of the polynucleotide phosphorylase of rat liver mitochondrial membranes (1,2), we have needed to assay phosphatase, pyrophosphatase, and nucleoside diphosphatase activities in the presence of Triton X-100 used (2) to solubilize the membrane-bound polynucleotide phosphorylase. The