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.

MSK2 S196-p
P38A S196-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.

CK2A1 S324-p
Regulatory protein:
MKK6 S347-p , S360-p
P38A S347-p , S360-p
anisomycin S196-p
BI2536 T687-p
dimethylfumarate S196-p
EGF S343-p , S347-p
fumaric_acid S196-p
IL-1b S196-p
ionomycin S347-p , S360-p
ischemia S343-p , S347-p , T687-p , S745-p
methylhydrogenfumarate S196-p
MG132 K37-ub , K440-ub , S678-p
MG132_withdrawal S343-p , S347-p , S678-p , S721-p , S737-p , S745-p , S772-p
PD98059 S347-p , S360-p
SB202190 S196-p , S343-p , S347-p , S360-p
TNF S347-p , S360-p
U0126 S343-p , S347-p
UV S196-p
vemurafenib S347-p