Download MendeleyThree-dimensional structure of a human class II histocompatibility molecule complexed with superantigen.
Jardetzky, T.S., Brown, J.H., Gorga, J.C., Stern, L.J., Urban, R.G., Chi, Y.I., Stauffacher, C., Strominger, J.L., Wiley, D.C.(1994) Nature 368: 711-718
- PubMed: 8152483
- DOI: https://doi.org/10.1038/368711a0
- Primary Citation of Related Structures:
1SEB - PubMed Abstract:
The structure of a bacterial superantigen, Staphylococcus aureus enterotoxin B, bound to a human class II histocompatibility complex molecule (HLA-DR1) has been determined by X-ray crystallography. The superantigen binds as an intact protein outside the conventional peptide antigen-binding site of the class II major histocompatibility complex (MHC) molecule. No large conformational changes occur upon complex formation in either the DR1 or the enterotoxin B molecules. The structure of the complex helps explain how different class II molecules and superantigens associate and suggests a model for ternary complex formation with the T-cell antigen receptor (TCR), in which unconventional TCR-MHC contacts are possible.
Organizational Affiliation:
Department of Biochemistry and Molecular Biology, Harvard University, Cambridge, Massachusetts 02138.
