Does anyone know how to measure COMT (cathecol-o-methyltransferase) enzyme activity?
Thank you.
There are kits available for measuring methyltransferase activity. They detect the product S-adenosylhomocysteine. Here is one example:
http://www.enzolifesciences.com/ADI-907-025/methyltransferase-activity-kit/
It uses fluorescence detection.
The methylated products are first extracted and purified using solid-phase cation exchange chromatography, and then detected (confirmed) and quantitated using Mass spectroscopy (MS).
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