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 S745-p
Src Y151-p , Y1055-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.

ERK1 S745-p
Src Y151-p
Regulatory protein:
EGFR Y1055-p
cytokines Y1055-p
DAKD S745-p
EGF Y1055-p
PD98059 S745-p
vanadate Y1055-p