Assay Method Information | |
| SARM1 NADase ADPR production |
Description: | This assay is an adaptation of the NAD+/NADH Glo assay (Promega G9071). In this assay, NAD+ cycling enzymes convert NAD+ into NADH. In the presence of NADH, the reductase enzymatically converts a pro-luciferin reductase substrate into luciferin. Luciferin is detected using Ultra-Glo rLuciferase, and the chemiluminescence intensity is proportional to the amount of NAD+ and NADH in the sample. In our assay conditions, the amount of NAD+ and NADH present in the lysate is undetectable with this assay, precluding any endogenous contribution to the final NAD+ detected. The assay was set up as follows: 2 μl inhibitor (final concentration 1 μM, 2% DMSO), 0.07 μg lysate (2 μl), and 2 μl of 400 nM NAD+. The reaction was incubated at 37 C. for 60 min, then 6 μl NAD+/NADH Glo detection reagent was added. After 30 min at room temperature, the luminescent signals were quantified using an Analyst HT reader (LJL Biosystems). The SARM1 SAM-TIR lysate catalyzed a dose-dependent depletion of NAD+, whereas NAD+ levels did not decline when reactions were performed with lysate prepared from control NRK1-HEK293T cells. |
Affinity data for this assay | |
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