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.

P38A S308-p
 Putative in vivo kinases: 

An enzyme-substrate reaction that occurs within living cells; includes cultured cells, ex vivo samples, and intact organisms. In the case of kinases, the large number of protein kinases in intact cells makes exact identification of the responsible kinase challenging.

CDK2 T155-p
Regulatory protein:
CDC42 S114-p
KRas S114-p
PAK4 S114-p
IL-2 S308-p
IL-25 S308-p
IL-33 S308-p
SB203580 S308-p