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.

BCKDK S333-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.

BCKDK S333-p , S343-p
BCKDK S333-p , S343-p
amino_acid_starvation S333-p
amino_acids S333-p
food deprivation S333-p
serum S333-p , S343-p