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.

GRK2 S353-p , S354-p
GRK3 S353-p , S354-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.

Pim1 S346-p
CXCL12 S331-p , S332-p , S345-p , S346-p , S348-p , S353-p , S354-p , S359-p
LPS S326-p , S328-p , S346-p