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.
GSK3A	S280-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.
GSK3A	S280-p
PKCA	S179-p , S230-p
PKCB iso2	S179-p , S230-p

Phosphatases, in vitro:
PPP1CA	S12-p , S21-p
PPP2CA	S12-p , S21-p

Regulatory protein:
HRas	S21-p
KRas	S21-p
MEK1	S21-p

Treatment:
fenofibrate	S280-p
HDL	S21-p
linoleic_acid	S280-p
nafenopin	S12-p , S21-p
okadaic_acid	S12-p , S21-p
oleic_acid	S280-p
palmitate	S280-p
PD98059	S21-p
pirinixic acid	S12-p , S21-p , S280-p
prasterone	S12-p , S21-p
siRNA	S280-p