... 70,585–593.14 Yasuda K, Nagafuku M, Shima T, Okada M, Yagi T,Yamada T, Minaki Y, Kato A, Tani-Ichi S, HamaokaT et al. (2002) Cutting edge: Fyn is essential for tyro-sine phosphorylation of Csk-binding ... role of PAG may bemore complex as the adaptor may also act as an acti-vating partner of Lyn, an SFK, and pSTAT3 in B-celllymphomas, as suggested by Tauzin et al. [19].The involvement of either ... SH3-domain interactions.In a pulse-chase assay, active Fyn and recombinantPAG were incubated on ice with a low concentration of radioactive ATP. After 10 min, a large excess of ATP was added and...