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 S676-p
ERK2 S676-p
JNK1 S213-p , S217-p
JNK2 S213-p , S217-p
P38A S168-p , S170-p
RSK2 S281-p , S285-p , S289-p , S344-p , S676-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.

CDK3 S259-p
ERK1 S676-p
ERK2 S676-p
JNK1 S213-p , S217-p
JNK2 S213-p , S217-p
RSK2 S281-p , S285-p , S289-p , S344-p , S676-p
Treatment:
EGF S213-p , S217-p , S272-p
ionomycin S168-p , S170-p , S676-p
ischemia S213-p , S217-p , S264-p , S311-p
phorbol_ester S676-p
U0126 S676-p
UV S168-p , S170-p