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.

TBK1 S48-p , S89-p , S113-p , S153-p , S349-p , S354-p , S357-p , T690-p , S728-p , S752-p , S820-p , S821-p , S862-p