Download MendeleyCrystal structure of a gammadelta T cell receptor ligand T22: a truncated MHC-like fold.
Wingren, C., Crowley, M.P., Degano, M., Chien, Y., Wilson, I.A.(2000) Science 287: 310-314
- PubMed: 10634787
- DOI: https://doi.org/10.1126/science.287.5451.310
- Primary Citation of Related Structures:
1C16 - PubMed Abstract:
Murine T10 and T22 are highly related nonclassical major histocompatibility complex (MHC) class Ib proteins that bind to certain gammadelta T cell receptors (TCRs) in the absence of other components. The crystal structure of T22b at 3.1 angstroms reveals similarities to MHC class I molecules, but one side of the normal peptide-binding groove is severely truncated, which allows direct access to the beta-sheet floor. Potential gammadelta TCR-binding sites can be inferred from functional mapping of T10 and T22 point mutants and allelic variants. Thus, T22 represents an unusual variant of the MHC-like fold and indicates that gammadelta and alphabeta TCRs interact differently with their respective MHC ligands.
Organizational Affiliation:
Department of Molecular Biology and the Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
