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- W2548875892 abstract "The presentation of peptide-MHCII complexes (pMHCIIs) for surveillance by T cells is a well-known immunological concept in vertebrates, yet the conformational dynamics of antigen exchange remain elusive. By combining NMR-detected H/D exchange with Markov modelling analysis of an aggregate of 275 microseconds molecular dynamics simulations, we reveal that a stable pMHCII spontaneously samples intermediate conformations relevant for peptide exchange. More specifically, we observe two major peptide exchange pathways: the kinetic stability of a pMHCII's ground state defines its propensity for intrinsic peptide exchange, while the population of a rare, intermediate conformation correlates with the propensity of the HLA-DM-catalysed pathway. Helix-destabilizing mutants designed based on our model shift the exchange behaviour towards the HLA-DM-catalysed pathway and further allow us to conceptualize how allelic variation can shape an individual's MHC restricted immune response." @default.
- W2548875892 created "2016-11-11" @default.
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- W2548875892 date "2016-11-09" @default.
- W2548875892 modified "2023-10-05" @default.
- W2548875892 title "MHC class II complexes sample intermediate states along the peptide exchange pathway" @default.
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- W2548875892 doi "https://doi.org/10.1038/ncomms13224" @default.
- W2548875892 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5105163" @default.
- W2548875892 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/27827392" @default.
- W2548875892 hasPublicationYear "2016" @default.
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