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.

EEF2K T53-p , T56-p , T58-p
Putative upstream phosphatases:
PPP2CA T56-p , T58-p
PPPM1A T58-p