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 S23-p , S118-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.

PAK1 S23-p , S118-p
Regulatory protein:
ZAP70 Y26-p
ephrin_B1 Y26-p
imatinib Y92-p
nocodazole S31-p
U0126 Y92-p
vorinostat K113-ac