Abstract:
:Prior studies have identified molecules involved in IL-1 signaling that transmit the extracellular stimulus to downstream kinase molecules causing altered transcriptional activity. Many of these investigations have relied heavily on ligand induced protein-protein interactions detected by immuno-coprecipitation to map the cascade of events from receptor binding to activation of downstream signaling intermediates. Direct protein interactions have not been commonly reported. An in vitro study was undertaken to better define the direct protein-protein interactions involved in IL-1 signaling. Results indicate that IRAK2 is capable of direct association with either IL-1R(I) or IL-1R(AcP). IRAK2 is also capable of associating directly with MyD88 by distinct regions. Finally, IRAK2 interactions with TRAF6 were mapped and demonstrate differences from more proximal signaling intermediates. A model is presented that reflects the specific molecular interactions responsible for recruiting signaling intermediates to the IL-1 receptor cytoplasmic domains.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Boch JA,Yoshida Y,Koyama Y,Wara-Aswapati N,Peng H,Unlu S,Auron PEdoi
10.1016/s0006-291x(03)00385-1subject
Has Abstractpub_date
2003-04-04 00:00:00pages
525-31issue
2eissn
0006-291Xissn
1090-2104pii
S0006291X03003851journal_volume
303pub_type
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