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.

PAK1 S28-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 S33-p , S46-p
PAK1 S28-p
AZD1152 S6-p
BI2536 S6-p , S17-p
nocodazole S17-p , S71-p
ZK-Thiazolidinone S71-p
ZM447439 S6-p