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.

MARK4 S502-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.

Chk1 S502-p
MARK1 S502-p
MARK3 S502-p
BMS-345541 S502-p
dasatinib S502-p
ischemia S519-p
KN-92 S502-p
KN-93 S502-p
LJI-308 S502-p
MG132 Y661-p
MG132_withdrawal S96-p , Y353-p , S354-p , S468-p
MRT67307 S502-p
nocodazole S68-p , S96-p , S255-p
selumetinib S519-p
siRNA S502-p
STO-609 S502-p
thymidine S96-p , S255-p
vemurafenib S519-p