ArticleJournal of immunology research2014
A Micropolymorphism Altering the Residue Triad 97/114/156 Determines the Relative Levels of Tapasin Independence and Distinct Peptide Profiles for HLA-A(*)24 Allotypes.
Article in Journal of immunology research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- HLA micropolymorphisms confine neoantigen conformational adaptability and guide T cell receptor selectivity.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Dynamic Allostery in T Cell Receptor Specificity: A Role for Peptides and MHC Polymorphisms in Allosterically Tuning Immune Recognition.BioEssays : news and reviews in molecular, cellular and developmental biology · 2026Review
- Article
- Unravelling the Proteomics of HLA-B*57:01Journal of personalized medicine · 2022Article
- Variations in MHC class I antigen presentation and immunopeptidome selection pathways.F1000Research · 2020Review
- Molecular determinants of chaperone interactions on MHC-I for folding and antigen repertoire selection.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- HLA-F Allele-Specific Peptide Restriction Represents an Exceptional Proteomic Footprint.International journal of molecular sciences · 2019Article
- Article
- The polymorphism at residue 156 determines the HLA-B*35 restricted peptide repertoire during HCMV infection.Immunogenetics · 2018Article
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5 authors.
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Abstract
While many HLA class I molecules interact directly with the peptide loading complex (PLC) for conventional loading of peptides certain class I molecules are able to present peptides in a way that circumvents the PLC components. We investigated micropolymorphisms at position 156 of HLA-A(*)24 allotypes and their effects on PLC dependence for assembly and peptide binding specificities. HLA-A(*)24:06(156Trp) and HLA-A(*)24:13(156Leu) showed high levels of cell surface expression while HLA-A(*)24:02(156Gln) was expressed at low levels in tapasin deficient cells. Peptides presented by these allelic variants showed distinct differences in features and repertoire. Immunoprecipitation experiments demonstrated all the HLA-A(*)24/156 variants to associate at similar levels with tapasin when present. Structurally, HLA-A(*)24:02 contains the residue triad Met97/His114/Gln156 and a Trp156 or Leu156 polymorphism provides tapasin independence by stabilizing these triad residues, thus generating an energetically stable and a more peptide receptive environment. Micropolymorphisms at position 156 can influence the generic peptide loading pathway for HLA-A(*)24 by altering their tapasin dependence for peptide selection. The trade-off for this tapasin independence could be the presentation of unusual ligands by these alleles, imposing significant risk following hematopoietic stem cell transplantation (HSCT).
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