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.

PKACA S189-p
PKCA T193-p
cAMP_analog S189-p
colforsin S189-p
GF109203X T193-p
H-7 T193-p
H-89 S189-p
phorbol_ester T193-p
PKI-(14-22)amide S189-p