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.

ERK1 T456-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.

CAD T1037-p
ERK1 T456-p
ERK2 T456-p
PKACA S1406-p
bisindolylmaleimide T456-p
cAMP_analog S1406-p
EGF T456-p
H-89 T456-p , S1406-p
PD98059 T456-p
PDGF T456-p
phorbol_ester T456-p
U0126 T456-p