Abstract:
:During IFN alpha stimulation, p59(fyn) associates with the Type I IFNR-associated Tyk-2 kinase in several human hematopoietic cell lines in vivo. This interaction is direct, and is mediated by the SH2 domain in p59(fyn), as shown by binding studies using glutathione-S-transferase fusion proteins and far western blots. Furthermore, in response to IFN alpha-treatment of cells, the SH2 domain of Fyn interacts with the Tyk-2-associated c-cbl proto-oncogene product. In a similar manner, during IFN gamma stimulation, p59(fyn) associates via its SH2 domain with the activated form of the IFN gamma-dependent Jak-2 kinase. These data suggest that p59(fyn) is a common element in IFN alpha and IFN gamma signaling, and is selectively engaged by the Type I or II IFN receptors via specific interactions with distinct Jak kinases.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Uddin S,Sher DA,Alsayed Y,Pons S,Colamonici OR,Fish EN,White MF,Platanias LCdoi
10.1006/bbrc.1997.6741subject
Has Abstractpub_date
1997-06-09 00:00:00pages
83-8issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(97)96741-3journal_volume
235pub_type
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journal_title:Biochemical and biophysical research communications
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