Specific interactions outside the proline-rich core of two classes of Src homology 3 ligands.Feng, S., Kasahara, C., Rickles, R.J., Schreiber, S.L.
(1995) Proc.Natl.Acad.Sci.USA 92: 12408-12415
- PubMed: 8618911
- Primary Citation of Related Structures:
- PubMed Abstract:
- Two Binding Orientations for Peptides to the Src SH3 Domain: Development of a General Model for SH3-Ligand Interactions
Feng, S.,Chen, J.K.,Yu, H.,Simon, J.A.,Schreiber, S.L.
(1994) Science 266: 1241
- Solution Structure of the SH3 Domain of Src and Identification of its Ligand-Binding Site
Yu, H.,Rosen, M.K.,Shin, T.B.,Seidel-Dugan, C.,Brugge, J.S.,Schreiber, S.L.
(1992) Science 258: 1665
- Structural Basis for the Binding of Proline-Rich Peptides to SH3 Domains
Yu, H.,Chen, J.K.,Feng, S.,Dalgarno, D.C.,Brauer, A.W.,Schreiber, S.L.
(1994) Cell 76: 933
Two dodecapeptides belonging to distinct classes of Src homology 3 (SH3) ligands and selected from biased phage display libraries were used to investigate interactions between a specificity pocket in the Src SH3 domain and ligant residues flanking th ...
Two dodecapeptides belonging to distinct classes of Src homology 3 (SH3) ligands and selected from biased phage display libraries were used to investigate interactions between a specificity pocket in the Src SH3 domain and ligant residues flanking the proline-rich core. The solution structures of c-Src SH3 complexed with these peptides were solved by NMR. In addition to proline-rich, polyproline type II helix-forming core, the class I and II ligands each possesses a flanking sequence that occupies a large pocket between the RT and n-Src loops of the SH3 domain. Structural and mutational analyses illustrate how the two classes of SH3 ligands exploit a specificity pocket on the receptor differently to increase binding affinity and specificity.
Howard Hughes Medical Institute, Department of Chemistry, Harvard University, Cambridge, MA 02138, USA.