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 T233-p
Regulatory protein:
p53 K24-ub , K25-ub , K27-ub
Ca(2+) K6-ac , K7-ac
H2O2 K6-ac , K7-ac , R301-me
MMS K6-ac , K7-ac , K27-ac , K31-ac , K32-ac , K35-ac
MS275 K197-ac
nicotinamide K6-ac , K7-ac
nutlin-3 K24-ub , K25-ub , K27-ub
resveratrol K6-ac , K7-ac
siRNA K6-ac , K7-ac
trichostatin_A K6-ac , K7-ac