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.

GRK3 S341-p , S343-p
Phosphatases, in vitro:
PPP1CB T356-p , T359-p
Coy-14 S341-p , S343-p , T353-p , T354-p
octreotide S341-p , S343-p
pasireotide S341-p , S343-p
SST14 S341-p , S343-p , T353-p , T354-p , T356-p , T359-p
vapreotide Y71-p