Solution structure of the Shc SH2 domain complexed with a tyrosine-phosphorylated peptide from the T-cell receptor.Zhou, M.M., Meadows, R.P., Logan, T.M., Yoon, H.S., Wade, W.S., Ravichandran, K.S., Burakoff, S.J., Fesik, S.W.
(1995) Proc Natl Acad Sci U S A 92: 7784-7788
- PubMed: 7544002
- DOI: https://doi.org/10.1073/pnas.92.17.7784
- Primary Citation of Related Structures:
- PubMed Abstract:
She is a widely expressed adapter protein that plays an important role in signaling via a variety of cell surface receptors and has been implicated in coupling the stimulation of growth factor, cytokine, and antigen receptors to the Ras signaling pathway. She interacts with several tyrosine-phosphorylated receptors through its C-terminal SH2 domain, and one of the mechanisms of T-cell receptor-mediated Ras activation involves the interaction of the Shc SH2 domain with the tyrosine-phosphorylated zeta chain of the T-cell receptor. Here we describe a high-resolution NMR structure of the Shc SH2 domain complexed to a phosphopeptide (GHDGLpYQGLSTATK) corresponding to a portion of the zeta chain of the T-cell receptor. Although the overall architecture of the protein is similar to other SH2 domains, distinct structural differences were observed in the smaller beta-sheet, BG loop, (pY + 3) phosphopeptide-binding site, and relative position of the bound phosphopeptide.
Pharmaceutical Discovery Division, Abbott Laboratories, Abbott Park, IL 60064 USA.