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.

CK2A1 S641-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.

CK2A1 S641-p
Phosphatases, in vitro:
PPM1G S641-p
Putative upstream phosphatases:
PPM1G S641-p
Regulatory protein:
PPM1G S655-p , T658-p
PPP2R5D S641-p
dasatinib Y177-p
EGF S641-p , S652-p , T658-p
gefitinib Y280-p
ginsenoside S641-p
ischemia T42-p , S690-p , S851-p , S858-p
MG132 K12-ub
MS275 K186-ac
nocodazole T634-p , S641-p
SB202190 S652-p , T658-p
scratch wound S641-p
silmitasertib S641-p
siRNA S641-p
Su11274 Y177-p , Y222-p , Y245-p , Y280-p
TBB S641-p
U0126 S641-p
vemurafenib S655-p , T658-p
vorinostat K186-ac