A spectrophotometric assay for fatty acid amide hydrolase suitable for high-throughput screening
De Bank, P. A., Kendall, D. A. and Alexander, S. P. H., 2005. A spectrophotometric assay for fatty acid amide hydrolase suitable for high-throughput screening. Biochemical Pharmacology, 69, pp. 1187-1193.
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Signalling via the endocannabinoids anandamide and 2-arachidonylglycerol appears to be terminated largely through the action of the enzyme fatty acid amide hydrolase (FAAH). In this report, we describe a simple spectrophotometric assay to detect FAAH activity in vitro using the ability of the enzyme to hydrolyze oleamide and measuring the resultant production of ammonia with a NADH/NAD(+)-coupled enzyme reaction. This dual-enzyme assay was used to determine K-m and Y-max values of 104 mu M and 5.7 nmol/min/mg protein, respectively, for rat liver FAAH-catalyzed oleamide hydrolysis. Inhibitor potency was determined with the resultant rank order of methyl arachidonyl fluorophosphonate > phenylmethylsulphonyl fluoride > anandamide. This assay system was also adapted for use in microtiter plates and its ability to detect a known inhibitor of FAAH demonstrated, highlighting its potential for use in high-throughput screening
|Creators||De Bank, P. A., Kendall, D. A. and Alexander, S. P. H.|
|Departments||Faculty of Science > Pharmacy & Pharmacology|
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