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.
Fyn	Y381-p

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.

Regulatory protein:
PTP1B	Y381-p
PTPN13	Y381-p
PTPN2	Y381-p
SH2-B-beta	Y381-p