Abstract
A simple and specific assay to measure the activity of two coenzyme A derivative-processing enzymes, i.e., phosphotransacetylase (EC 2.3.1.8) and acetyl-coenzyme A carboxylase (EC 6.4.1.2), is described. The assay is based on the HPLC analysis of the short-chain coenzyme A derivatives formed by the enzymatic reaction, viz., acetyl-CoA and malonyl-CoA. For this purpose, ion-pair reversed-phase HPLC conditions are optimized. Furthermore, the influence of several variables on the enzyme reaction is studied in order to get maximum activity. Due to its short analysis time, good selectivity, and chromatogram information, HPLC proves to be an excellent method for the assay of these enzymes.
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