Structural basis for the restoration of TCR recognition of an MHC allelic variant by peptide secondary anchor substitution.
Structural basis for the restoration of TCR recognition of an MHC allelic variant by peptide secondary anchor substitution.
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DOI:
10.1084/jem.20040217
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发表时间:
2004-12-06
期刊:
影响因子:
--
通讯作者:
Fremont DH
中科院分区:
文献类型:
--
作者:
Miley MJ;Messaoudi I;Metzner BM;Wu Y;Nikolich-Zugich J;Fremont DH
Major histocompatibility complex (MHC) class I variants H-2Kb and H-2Kbm8 differ primarily in the B pocket of the peptide-binding groove, which serves to sequester the P2 secondary anchor residue. This polymorphism determines resistance to lethal herpes simplex virus (HSV-1) infection by modulating T cell responses to the immunodominant glycoprotein B498-505 epitope, HSV8. We studied the molecular basis of these effects and confirmed that T cell receptors raised against Kb–HSV8 cannot recognize H-2Kbm8–HSV8. However, substitution of SerP2 to GluP2 (peptide H2E) reversed T cell receptor (TCR) recognition; H-2Kbm8–H2E was recognized whereas H-2Kb–H2E was not. Insight into the structural basis of this discrimination was obtained by determining the crystal structures of all four MHC class I molecules in complex with bound peptide (pMHCs). Surprisingly, we find no concerted pMHC surface differences that can explain the differential TCR recognition. However, a correlation is apparent between the recognition data and the underlying peptide-binding groove chemistry of the B pocket, revealing that secondary anchor residues can profoundly affect TCR engagement through mechanisms distinct from the alteration of the resting state conformation of the pMHC surface.
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DOI:
10.1084/jem.179.1.213
发表时间:
1994-01-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Chattopadhyay S;Theobald M;Biggs J;Sherman LA
通讯作者:
Sherman LA
影响因子:
2.9
作者:
Batalia, MA;Kirksey, TJ;Collins, EJ
通讯作者:
Collins, EJ
影响因子:
4.4
作者:
Kersh, GJ;Miley, MJ;Fremont, DH
通讯作者:
Fremont, DH
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL
影响因子:
56.9
作者:
FREMONT, DH;MATSUMURA, M;WILSON, IA
通讯作者:
WILSON, IA