- Angiotensin II-induced tyrosine phosphorylation of signal transducers and activators of transcription 1 is regulated by Janus-activated kinase 2 and Fyn kinases and mitogen-activated protein kinase phosphatase 1. Venema, R.C., Venema, V.J., Eaton, D.C., Marrero, M.B. J. Biol. Chem. (1998)