| Assay Method Information | |
| | Chemiluminescent Assay |
| Description: | A PRMT5 chemiluminescent assay was used to measure the IC50 activity of PRMT5 of the compounds of Examples 1A to 7 above. Biotinylated histone peptides were synthesized and attached to 384-well plates. Compound serial dilutions were performed and added to the assay plate. Histone H4 monomethyl R3 antibody was obtained from Abcam. A master mix for each well was prepared and human PRMT5/MEP50 (expressed in HEK293 cells) diluted in assay buffer to a concentration of 5 ng/μL. The reaction was incubated and slowly rotated for 60 minutes at the point of PRMT5/MEP50 addition. The supernatant from the wells was removed and blocking buffer was added to each well and rotated for 10 minutes. The primary antibody was diluted and added to every well for 60 minutes, before it was removed and the wells washed. The horse raddish peroxidase (HRP)-coupled secondary antibody was diluted and added to each well with an incubation time of 30 minutes. The HRP chemiluminescent substrate was added to every well. The plate was read on a Flourstar Omega BMG Labtech instrument (Ortenberg, Germany) and the analysis of IC50 was performed using the Flourstar Omega BMG Labtech software. |
| Affinity data for this assay | |
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