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.

NDR1 S281-p
Regulatory protein:
MICAL1 S281-p , T444-p
MST1 T444-p
etoposide T444-p
insulin S264-p
LY294002 S264-p
MK-2206 S264-p
okadaic_acid S281-p , T444-p
siRNA T444-p