Abstract
T cell receptor (TCR) recognition of peptide–major histocompatibility complexes (pMHCs) is characterized by a highly conserved docking polarity. Whether this polarity is driven by recognition or signaling constraints remains unclear. Using “reversed-docking” TCRb-variable (TRBV) 17+ TCRs from the naïve mouse CD8+ T cell repertoire that recognizes the H-2Db–NP366 epitope, we demonstrate that their inability to support T cell activation and in vivo recruitment is a direct consequence of reversed docking polarity and not TCR–pMHCI binding or clustering characteristics. Canonical TCR–pMHCI docking optimally localizes CD8/Lck to the CD3 complex, which is prevented by reversed TCR–pMHCI polarity. The requirement for canonical docking was circumvented by dissociating Lck from CD8. Thus, the consensus TCR–pMHC docking topology is mandated by T cell signaling constraints.
| Original language | English |
|---|---|
| Article number | eabe9124 |
| Number of pages | 14 |
| Journal | Science |
| Volume | 372 |
| Issue number | 6546 |
| DOIs | |
| Publication status | Published - 4 Jun 2021 |
Research output
- 77 Citations
- 1 Other contribution
-
Accompanying artwork for media release: Monash researchers make fundamental advance in understanding T cell immunity
Tandori, E. (Illustrator), 4 Jun 2021, 1 p. Melbourne Australia : Monash University.Research output: Other contribution › Other
Open AccessFile
Projects
- 2 Finished
-
Dissecting the requirements for effective T cell activation
La Gruta, N. (Primary Chief Investigator (PCI))
1/01/20 → 31/12/23
Project: Research
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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
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