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New sensitive assay for phosphatidylserine decarboxylase based on the detection of CO2 from nonradiolabeled phosphatidylserine.

Published Web Location

https://doi.org/10.1016/s0022-2275(20)36867-x
Abstract

A new rapid assay for phosphatidylserine decarboxylase, which is sensitive in the nanomolar range, is described. Synthesis of radiolabeled phosphatidylserine for use as a substrate is not required, since the assay, unlike previous ones, is based on the detection of CO(2) liberated from unlabeled phosphatidylserine. The assay employs a gas chromatographic procedure for the analysis of methane formed by catalytic conversion of the CO(2) produced as a product of the enzymatic reaction.

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