Abstract
T cell receptors (TCRs) recognize antigens presented by major histocompatibility complex (MHC) and MHC class I-like molecules. We describe a diverse population of human γδ T cells isolated from peripheral blood and tissues that exhibit autoreactivity to the monomorphic MHC-related protein 1 (MR1). The crystal structure of a γδTCR-MR1-antigen complex starkly contrasts with all other TCR-MHC and TCR-MHC-I-like complex structures. Namely, the γδTCR binds underneath the MR1 antigen-binding cleft, where contacts are dominated by the MR1 α3 domain. A similar pattern of reactivity was observed for diverse MR1-restricted γδTCRs from multiple individuals. Accordingly, we simultaneously report MR1 as a ligand for human γδ T cells and redefine the parameters for TCR recognition.
| Original language | English |
|---|---|
| Pages (from-to) | 1522-1527 |
| Number of pages | 6 |
| Journal | Science |
| Volume | 366 |
| Issue number | 6472 |
| DOIs | |
| Publication status | Published - 20 Dec 2019 |
Projects
- 2 Finished
-
PTPs in the CNS control of WAT browning
Tiganis, T. (Primary Chief Investigator (PCI)) & Cowley, M. (Chief Investigator (CI))
NHMRC - National Health and Medical Research Council (Australia)
1/01/16 → 31/12/20
Project: Research
-
ARC Centre of Excellence in Advanced Molecular Imaging
Whisstock, J. (Primary Chief Investigator (PCI)), Abbey, B. (Chief Investigator (CI)), Nugent, K. A. (Chief Investigator (CI)), Quiney, H. M. (Chief Investigator (CI)), Godfrey, D. I. (Chief Investigator (CI)), Heath, W. (Chief Investigator (CI)), Fairlie, D. (Chief Investigator (CI)), Chapman, H. (Partner Investigator (PI)), Peele, A. (Partner Investigator (PI)), Davey, J. (Partner Investigator (PI)) & Wittmann, A. (Project Manager)
30/06/14 → 31/03/21
Project: Research
Equipment
-
Australian Synchrotron
Office of the Vice-Provost (Research and Research Infrastructure)Facility/equipment: Facility
-
Monash Macromolecular Crystallisation Platform (MMCP)
Kong, G. (Operator)
Faculty of Medicine Nursing and Health Sciences Research PlatformsFacility/equipment: Facility
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