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 S65-p
ERK2 S65-p
JNK1 S65-p
P38A S65-p
P38A S65-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 S65-p
JNK1 S55-p , S65-p
P38A S65-p
Regulatory protein:
MEKK1 S65-p
MKK3 S65-p
NGFR S65-p
arsenite S65-p
LY294002 S109-p , T110-p
NGF S109-p , T110-p
osmotic_stress S65-p
PD184352 S65-p
SB203580 S65-p
serum S65-p
SP600125 S65-p
U0126 S65-p , S109-p , T110-p