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1KBG

MHC Class I H-2KB Presented Glycopeptide RGY8-6H-GAL2

Summary for 1KBG
Entry DOI10.2210/pdb1kbg/pdb
DescriptorPROTEIN (MAJOR HISTOCOMPATIBILITY COMPLEX CLASS I ANTIGEN H-2KB), PROTEIN (BETA-2-MICROGLOBULIN), PROTEIN (SYNTHETIC GLYCOPEPTIDE RGY8-6H-GAL2), ... (7 entities in total)
Functional Keywordsmhc, major histocompatibility complex, antigen presentation, glycopeptide, cellular immunity, immunology, cell surface receptor, synthetic peptide, vaccine, immune system
Biological sourceMus musculus (house mouse)
More
Total number of polymer chains3
Total formula weight45459.90
Authors
Speir, J.A.,Abdel-Motal, U.M.,Jondal, M.,Wilson, I.A. (deposition date: 1998-08-28, release date: 1999-02-09, Last modification date: 2023-11-15)
Primary citationSpeir, J.A.,Abdel-Motal, U.M.,Jondal, M.,Wilson, I.A.
Crystal structure of an MHC class I presented glycopeptide that generates carbohydrate-specific CTL.
Immunity, 10:51-61, 1999
Cited by
PubMed 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.
PubMed: 10023770
DOI: 10.1016/S1074-7613(00)80006-0
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (2.2 Å)
Structure validation

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