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.

CDK4 S787-p
Putative upstream phosphatases:
PPP3CA S787-p
Regulatory protein:
ATM S772-p
ENC1 S787-p , S803-p
ROCK1 S772-p , S799-p , S803-p
Treatment:
5-HT S242-p , T245-p , T366-p , S772-p , S787-p , S799-p , S803-p
angiotensin S787-p
apigenin S787-p
BDNF S600-p , S772-p , S787-p , S799-p , S803-p
CBX S772-p , S787-p , S799-p , S803-p
ciclosporin S787-p
depolarization S787-p
EGF S787-p
endothelin S772-p , S787-p , S799-p , S803-p
H2O2 S772-p
insulin T818-p
isoamyl_acetate S787-p
KU-55933 S772-p
PD98059 S787-p
PDGF S772-p , S787-p
phorbol_ester S787-p
RANTES S600-p , S772-p , S787-p , S799-p , S803-p
rapamycin S772-p , S787-p , T818-p
serum S242-p , T245-p , T366-p , S772-p , S787-p , S799-p , S803-p
siRNA S787-p , S803-p
tolbutamide S772-p , S787-p
TSH T818-p
virus infection S600-p , S772-p , S787-p , S799-p , S803-p
wortmannin S787-p