Assay Method Information

Assay Name:  Assay of ATR Kinase Activity
Description:  Biotinylated protein derived from p53 (Eurofins, art. No.: 14-952) was phosphorylated with ATR kinase. The amount of phosphorylated protein was determined by time-resolved fluorescence in this assay. The amount of phosphorylated protein was detected by anti-p53-phospho-(serine 15)-K-specific antibody (Cisbio, art. No.: 61GSTDLA) and d2 labeled anti-GST antibody (Cisbio, art. No. 61P08KAE). Before the assay, the following working solutions were formulated as required: 1×reaction buffer (20 mM HEPES PH8.0, 1% glycerol, 0.01% Brij-35), dilution buffer (20 mM HEPES PH8.0, 1% glycerol, 0.01% Brij-35, 5 mM DTT and 1% BSA), stop solution (20 mM HEPES PH8.0, 1% glycerol, 0.01% Brij-35, 250 mM EDTA), detection buffer (50 mM HEPES pH7.0, 150 mM NaCl, 267 mM KF, 0.1% sodium cholate, 0.01% Tween-20, 0.0125% sodium azide). The reagents used above were purchased from Sigma or Invitrogen, except for those whose manufacturers were mentioned.
Affinity data for this assay
 

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