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Immunity. 1997 Jun;6(6):727-38.

Characterization and quantitation of peptide-MHC complexes produced from hen egg lysozyme using a monoclonal antibody.

Author information

1
Center for Immunology, Department of Pathology, Washington Unviversity School of Medicine, St. Louis, Missouri 63110, USA.

Abstract

Here we describe generation of Aw3.18, a monoclonal antibody that recognizes peptide residues 48-62 of hen egg lysozyme (HEL) bound to the MHC class II molecule I-Ak. Epitope mapping revealed that Aw3.18 detects a change in the solvent-exposed surface of this peptide-MHC complex upon substitution of the peptide side chain at position P1. Furthermore, Aw3.18 blocked recognition by some, but not all, of the HEL 48-62-reactive T cell hybridomas tested, suggesting a heterogeneity in the T cell response toward this complex. Finally, using Aw3.18, it was possible to determine the fraction of I-Ak molecules loaded with 48-62 peptide after culture of an antigen-presenting cell in medium containing HEL.

PMID:
9208845
DOI:
10.1016/s1074-7613(00)80448-3
[Indexed for MEDLINE]
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