Peptide-induced conformational changes in class I heavy chains alter major histocompatibility complex recognition.
Open Access
- 1 December 1992
- journal article
- Published by Rockefeller University Press in The Journal of Experimental Medicine
- Vol. 176 (6) , 1757-1761
- https://doi.org/10.1084/jem.176.6.1757
Abstract
Small peptides, derived from endogenous proteins bind within the antigen binding groove created by the beta-pleated sheets and alpha helices of the alpha 1 and alpha 2 domains of the class I molecule of the major histocompatibility complex (MHC). However, the precise role of peptide in class I MHC conformation remains unclear. Here, we have shown that, in at least some instances, changes induced in the MHC molecule by the binding of distinct peptides can be identified as specific alterations in serological epitopes expressed on the class I protein. The nature of specific peptides expressed by class I-bearing cells may, therefore, have a dramatic influence on T cell development, self-tolerance, and alloreactivity.Keywords
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