Assay Method Information

Assay Name:  Competition Binding Assay
Description:  Phosphorylation of activity of ROCK1 and ROCK2 and those of other kinases, AKT1, GRK2, PKA, PKCa and RSK1 were performed by Reaction Biology (Malvern, Pa.) (Ma et al., 2008) The ROCK1 enzyme tested was GST[1-535] ROCK1 (Genbank, NP 005397), ROCK2 was GST[5-554] (Genbank, 3327051). For the kinase assay buffers contained 20 mM Hepes, 10 mM MgCl2, 2 mM DTT, 0.02 mg/mL BSA, 0.1% DMSO, 1 mM EGTA, 0.02% Brij-35, 10 uM ATP, [γP33]-ATP and for ROCK enzymes, 20 uM long S6-peptide (32 amino acids length). Appropriate substrates and activation was applied for the other kinases tested. Each enzyme was preincubated with test compound for 15 min., and the reaction started by addition of ATP. Samples were incubated at room temperature for 120 min, and applied to P81 ion exchange paper and washed extensively; the radioactive content of the filters were determined.
Affinity data for this assay
 

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