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 T623-p
ERK2 T623-p
colforsin T623-p
IBMX T623-p
progesterone T623-p
seliciclib T623-p