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 T333-p
Phosphatases, in vitro:
PPP1CC T333-p
Regulatory protein:
GRK3 T333-p
GRK5 T333-p
GRK6 T333-p
BIM23627 T333-p
calyculin_A T333-p
KE108 T333-p
octreotide T333-p
okadaic_acid T333-p
pasireotide T333-p
siRNA T333-p
SST14 T333-p , T347-p
SST28 S242-p