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.

EphA1 Y243-p
EphB1 Y243-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.

EphA1 Y243-p
EphB1 Y243-p
Ron Y243-p
Phosphatases, in vitro:
PTPN2 Y243-p
Putative upstream phosphatases:
PTPN2 Y243-p
Regulatory protein:
EFNA1 Y243-p
EFNB2 Y243-p