PMID- 19139173 OWN - NLM STAT- MEDLINE DCOM- 20090223 LR - 20211020 IS - 1540-9538 (Electronic) IS - 0022-1007 (Print) IS - 0022-1007 (Linking) VI - 206 IP - 1 DP - 2009 Jan 16 TI - Natural micropolymorphism in human leukocyte antigens provides a basis for genetic control of antigen recognition. PG - 209-19 LID - 10.1084/jem.20082136 [doi] AB - Human leukocyte antigen (HLA) gene polymorphism plays a critical role in protective immunity, disease susceptibility, autoimmunity, and drug hypersensitivity, yet the basis of how HLA polymorphism influences T cell receptor (TCR) recognition is unclear. We examined how a natural micropolymorphism in HLA-B44, an important and large HLA allelic family, affected antigen recognition. T cell-mediated immunity to an Epstein-Barr virus determinant (EENLLDFVRF) is enhanced when HLA-B*4405 was the presenting allotype compared with HLA-B*4402 or HLA-B*4403, each of which differ by just one amino acid. The micropolymorphism in these HLA-B44 allotypes altered the mode of binding and dynamics of the bound viral epitope. The structure of the TCR-HLA-B*4405(EENLLDFVRF) complex revealed that peptide flexibility was a critical parameter in enabling preferential engagement with HLA-B*4405 in comparison to HLA-B*4402/03. Accordingly, major histocompatibility complex (MHC) polymorphism can alter the dynamics of the peptide-MHC landscape, resulting in fine-tuning of T cell responses between closely related allotypes. FAU - Archbold, Julia K AU - Archbold JK AD - The Protein Crystallography Unit, Department of Biochemistry and Molecular Biology, School of Biomedical Sciences, Monash University, Clayton, Victoria 3800, Australia. FAU - Macdonald, Whitney A AU - Macdonald WA FAU - Gras, Stephanie AU - Gras S FAU - Ely, Lauren K AU - Ely LK FAU - Miles, John J AU - Miles JJ FAU - Bell, Melissa J AU - Bell MJ FAU - Brennan, Rebekah M AU - Brennan RM FAU - Beddoe, Travis AU - Beddoe T FAU - Wilce, Matthew C J AU - Wilce MC FAU - Clements, Craig S AU - Clements CS FAU - Purcell, Anthony W AU - Purcell AW FAU - McCluskey, James AU - McCluskey J FAU - Burrows, Scott R AU - Burrows SR FAU - Rossjohn, Jamie AU - Rossjohn J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090112 PL - United States TA - J Exp Med JT - The Journal of experimental medicine JID - 2985109R RN - 0 (Complementarity Determining Regions) RN - 0 (Epitopes, T-Lymphocyte) RN - 0 (Epstein-Barr Virus Nuclear Antigens) RN - 0 (HLA Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-B*44:03 antigen) RN - 0 (HLA-B44 Antigen) RN - 0 (Receptors, Antigen, T-Cell) RN - 0 (Receptors, Antigen, T-Cell, alpha-beta) RN - 0 (Recombinant Proteins) SB - IM MH - Amino Acid Substitution MH - Binding Sites MH - Complementarity Determining Regions/genetics/immunology MH - Epitopes, T-Lymphocyte/genetics/*immunology MH - Epstein-Barr Virus Nuclear Antigens/immunology MH - HLA Antigens/genetics/metabolism MH - HLA-B Antigens/chemistry/*genetics/metabolism MH - HLA-B44 Antigen MH - Humans MH - Hydrogen Bonding MH - Kinetics MH - Models, Molecular MH - *Polymorphism, Single Nucleotide MH - Protein Binding MH - Protein Conformation MH - Receptors, Antigen, T-Cell/genetics/*immunology MH - Receptors, Antigen, T-Cell, alpha-beta/genetics/immunology MH - Recombinant Proteins/metabolism MH - T-Lymphocytes, Cytotoxic/immunology PMC - PMC2626662 EDAT- 2009/01/14 09:00 MHDA- 2009/02/24 09:00 PMCR- 2009/07/19 CRDT- 2009/01/14 09:00 PHST- 2009/01/14 09:00 [entrez] PHST- 2009/01/14 09:00 [pubmed] PHST- 2009/02/24 09:00 [medline] PHST- 2009/07/19 00:00 [pmc-release] AID - jem.20082136 [pii] AID - 20082136 [pii] AID - 10.1084/jem.20082136 [doi] PST - ppublish SO - J Exp Med. 2009 Jan 16;206(1):209-19. doi: 10.1084/jem.20082136. Epub 2009 Jan 12.