Kinase, in vitro: 

An enzyme-substrate reaction that occurs in non-living experimental conditions such as a test tube. For example, a purified enzyme is reacted with a substrate protein or mixture of proteins or peptides.

GRK2 S404-p , S408-p , S410-p
PKCA S394-p , S400-p
Treatment:
phorbol_ester S394-p , S400-p , S404-p , S408-p , S410-p
racepinefrine S394-p , S400-p , S404-p , S408-p , S410-p
Ro31-8220 S394-p , S400-p