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Crystal structure of an MHC class I presented glycopeptide that generates carbohydrate-specific CTL.

Abstract：

:T cell receptor (TCR) recognition of nonpeptidic and modified peptide antigens has been recently uncovered but is still poorly understood. Immunization with an H-2Kb-restricted glycopeptide RGY8-6H-Gal2 generates a population of cytotoxic T cells that express both alpha/beta TCR, specific for glycopeptide, and gamma/delta TCR, specific for the disaccharide, even on glycolipids. The crystal structure of Kb/RGY8-6H-Gal2 now demonstrates that the peptide and H-2Kb structures are unaffected by the peptide glycosylation, but the central region of the putative TCR binding site is dominated by the extensive exposure of the tethered carbohydrate. These features of the Kb/RGY8-6H-Gal2 structure are consistent with the individual ligand binding preferences identified for the alpha/beta and gamma/delta TCRs and thus explain the generation of a carbohydrate-specific T cell response.

journal_name

Immunity

journal_title

Immunity

authors

Speir JA,Abdel-Motal UM,Jondal M,Wilson IA

doi

10.1016/s1074-7613(00)80006-0

keywords:

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

51-61

issue

1

eissn

1074-7613

issn

1097-4180

pii

S1074-7613(00)80006-0

journal_volume

10

pub_type

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