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.

CDK5 S6-p
PKCA S65-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.

CDK5 S6-p , S67-p
PKCA S65-p , S67-p
Phosphatases, in vitro:
PPP2R5A S6-p
Regulatory protein:
PKCA S67-p
8-Rp-cAMP T35-p
butyrolactone S6-p
calyculin_A S65-p , S67-p
ciclosporin S6-p , T35-p , S67-p
colforsin S6-p
corticosterone S43-p , S46-p , S47-p
ethanol S43-p , S46-p , S47-p
FK506 T35-p
fostriecin S6-p , T35-p
H-89 T35-p
indolinone_A S6-p
indolinone_B S6-p
ischemia T35-p , S67-p
isoproterenol T35-p
neurabin S6-p
NMDA S6-p , T35-p
okadaic_acid S6-p , T35-p , S65-p , S67-p
seliciclib S6-p
Sp-cAMPS T35-p
sucrose S43-p , S46-p , S47-p
U0126 S6-p