Journal article

Unusual features of self-peptide/MHC binding by autoimmune T cell receptors.

Melissa J Nicholson, Michael Hahn, Kai W Wucherpfennig

Immunity | Published : 2005

Abstract

Structural studies on T cell receptors (TCRs) specific for foreign antigens demonstrated a remarkably similar topology characterized by a central, diagonal TCR binding mode that maximizes interactions with the MHC bound peptide. However, three recent structures involving autoimmune TCRs demonstrated unusual interactions with self-peptide/MHC complexes. Two TCRs from multiple sclerosis patients bind with unconventional topologies, and both TCRs are shifted toward the peptide N terminus and the MHC class II beta chain helix. A TCR from the experimental autoimmune encephalomyelitis (EAE) model binds in a conventional orientation, but the structure is unusual because the self-peptide only partia..

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University of Melbourne Researchers