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.

CDK2 S880-p
CK2A1 S854-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.

CDK1 S69-p , S120-p
CDK2 S880-p
Chk1 S904-p
CK2A1 S854-p
CXCL12 S854-p
ischemia S722-p , S880-p , S1021-p
okadaic_acid S69-p , S120-p
retinoic_acid S69-p , S120-p
silmitasertib S854-p
siRNA S854-p , S880-p
thymidine S854-p