Download MendeleyConvergent Recognition of the IgE Binding Site on the High-Affinity IgE Receptor.
Stamos, J., Eigenbrot, C., Nakamura, G.R., Reynolds, M.E., Yin, J.P., Lowman, H.B., Fairbrother, W.J., Starovasnik, M.A.(2004) Structure 12: 1289-1301
- PubMed: 15242605
- DOI: https://doi.org/10.1016/j.str.2004.04.015
- Primary Citation of Related Structures:
1RPQ - PubMed Abstract:
Two structurally distinct classes of peptides were recently identified by phage display that bind the high-affinity IgE receptor, FcepsilonRI, and block IgE binding and subsequent receptor activation. Both classes adopt highly stable structures in solution, one forming a beta hairpin, with the other forming a helical "zeta" structure. Despite these differences, the two classes bind competitively to the same site on the receptor. Structural analyses of both peptide-receptor complexes by NMR spectroscopy and/or X-ray crystallography reveal that the unrelated peptide scaffolds have nevertheless converged to present a similar three-dimensional surface to interact with FcepsilonRI and that their modes of interaction share a key feature of the IgE-FcepsilonRI complex, the proline/tryptophan sandwich.
Organizational Affiliation:
Department of Protein Engineering, Genentech, Inc., One DNA Way, South San Francisco, CA 94080 USA. star@gene.com
