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Updated: Aug 9, 2026

Overlapping Peptide Library to Map Qa-1 Epitopes in a Protein
Published on: December 20, 2017
Reassociation with beta 2-microglobulin is necessary for Kb class I major histocompatibility complex binding of
K L Rock1, L E Rothstein, S R Gamble
1Division of Lymphocyte Biology, Dana-Farber Cancer Institute, Boston, MA 02115.
Abstract:
T lymphocytes recognize endogenously produced antigenic peptides in association with major histocompatibility complex (MHC)-encoded molecules. Peptides from the extracellular fluid can be displayed in association with class I and class II MHC molecules. Here we report that mature Kb class I MHC molecules bind peptides upon dissociation and reassociation of their light chain. Intact Kb heterodimers, unlike class II MHC molecules, are relatively unreceptive to binding peptides. This property may maintain segregation of class I and class II MHC-restricted peptides and has implications for the use of peptides as vaccines.
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