Abstract
We report evidence that a major histocompatibility complex-encoded nonclassic class I molecule presents a foreign peptide to cytotoxic T lymphocytes (CTL) during an infection. Mice immunized with virulent Listeria monocytogenes generate CD8+ CTL with αβ receptors specific for a bacterial peptide presented by a conserved class I molecule encoded in the M region of the major histocompatibility complex. The Listeria peptide is digested by carboxypeptidase Y but resists aminopeptidase M, and only peptides with N-formyl methionine competitively block its presentation to CTL. Transfection with the H-2M3d gene enables a negative (H-2w17) cell line to present the bacterial peptide. One function, therefore, of H-2M3 is to present bacterial peptides to CTL during infection.
Original language | English (US) |
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Pages (from-to) | 215-223 |
Number of pages | 9 |
Journal | Cell |
Volume | 70 |
Issue number | 2 |
DOIs | |
State | Published - Jul 24 1992 |
ASJC Scopus subject areas
- General Biochemistry, Genetics and Molecular Biology