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.

Arg Y256-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.

Arg Y256-p
PAK4 S484-p , S485-p
Regulatory protein:
EGFR Y256-p
MARCKS Y256-p , S484-p
TRIP10 Y256-p
cytochalasin_D S484-p , S485-p
EGF Y256-p
ephrin_B1 Y256-p
ephrin_B2 Y256-p
FGF2 Y256-p
imatinib Y256-p
insulin Y256-p , S484-p
ischemia Y256-p
LPS S484-p , S485-p
PP2 S484-p , S485-p
Su11274 Y256-p