A conserved energetic footprint underpins recognition of human leukocyte antigen-E by two distinct αβ T cell receptors.

ABSTRACT: αβ T cell receptors (TCRs) interact with peptides bound to the polymorphic major histocompatibility complex class Ia (MHC-Ia) and class II (MHC-II) molecules as well as the essentially monomorphic MHC class Ib (MHC-Ib) molecules. Although there is a large amount of information on how TCRs engage with MHC-Ia and MHC-II, our understanding of TCR/MHC-Ib interactions is very limited. Infection with cytomegalovirus (CMV) can elicit a CD8⁺ T cell response restricted by the human MHC-Ib molecule human leukocyte antigen (HLA)-E and specific for an epitope from UL40 (VMAPRTLIL), which is characterized by biased TRBV14 gene usage. Here we describe an HLA-E-restricted CD8⁺ T cell able to recognize an allotypic variant of the UL40 peptide with a modification at position 8 (P8) of

SUBMITTER: Sullivan LC 

PROVIDER: S-EPMC5743087 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature