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Structure of the Su...
Structure of the Superantigen Staphylococcal Enterotoxin B in Complex with TCR and Peptide-MHC Demonstrates Absence of TCR-Peptide Contacts.
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- Rödström, Karin (författare)
- Lund University,Lunds universitet,Medicinsk strukturbiologi,Forskargrupper vid Lunds universitet,Medical Structural Biology,Lund University Research Groups
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- Elbing, Karin (författare)
- Lund University,Lunds universitet,Medicinsk strukturbiologi,Forskargrupper vid Lunds universitet,Medical Structural Biology,Lund University Research Groups
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- Lindkvist, Karin (författare)
- Lund University,Lunds universitet,Medicinsk strukturbiologi,Forskargrupper vid Lunds universitet,Medical Structural Biology,Lund University Research Groups
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(creator_code:org_t)
- 2014-08-15
- 2014
- Engelska.
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Ingår i: Journal of Immunology. - : The American Association of Immunologists. - 1550-6606 .- 0022-1767. ; 193:4, s. 1998-2004
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http://dx.doi.org/10...
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Abstract
Ämnesord
Stäng
- Superantigens are immune-stimulatory toxins produced by Staphylococcus aureus, which are able to interact with host immune receptors to induce a massive release of cytokines, causing toxic shock syndrome and possibly death. In this article, we present the x-ray structure of staphylococcal enterotoxin B (SEB) in complex with its receptors, the TCR and MHC class II, forming a ternary complex. The structure, in combination with functional analyses, clearly shows how SEB adopts a wedge-like position when binding to the β-chain of TCR, allowing for an interaction between the α-chain of TCR and MHC. Furthermore, the binding mode also circumvents contact between TCR and the peptide presented by MHC, which enables SEB to initiate a peptide-independent activation of T cells.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Immunologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Immunology in the medical area (hsv//eng)
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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