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.

RSK2 T147-p
Regulatory protein:
PKCA T147-p
PKCD T147-p
RSK2 T147-p
Ca(2+) T147-p
EGF T147-p
phorbol_ester T147-p
siRNA T147-p