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 S444-p
Src Y340-p
antibody S172-p
BI2536 S75-p
docetaxel Y340-p
EGF Y340-p
serum Y340-p
SU6656 Y340-p