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	S579-p
ERK2	S579-p
PKACA	S54-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	S579-p
ERK2	S579-p
PKACA	S13-p , S54-p

Phosphatases, in vitro:
PPP2CA	S54-p

Treatment:
ciclosporin	S54-p
colforsin	S13-p , S54-p
EGF	S579-p
H2O2	S54-p , S239-p , S579-p
IBMX	S13-p , S54-p
okadaic_acid	S54-p
PD98059	S239-p , S579-p
peptide inhibitor	S54-p
rapamycin	S239-p
U0126	S579-p
wortmannin	S239-p