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.

CK2A1 S97-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.

CK2A1 S97-p
Regulatory protein:
CRY1 K544-ac
MTA1 K544-ac
PER2 K544-ac
SIRT2 K544-ac
SIRT3 K544-ac
H2O2 S97-p
NAD_zwitterion K544-ac
nicotinamide K544-ac
siRNA K544-ac
trichostatin_A K544-ac