1qse: Difference between revisions

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[[Image:1qse.gif|left|200px]]
{{Seed}}
[[Image:1qse.png|left|200px]]


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{{STRUCTURE_1qse|  PDB=1qse  |  SCENE=  }}  
{{STRUCTURE_1qse|  PDB=1qse  |  SCENE=  }}  


'''STRUCTURE OF HUMAN A6-TCR BOUND TO HLA-A2 COMPLEXED WITH ALTERED HTLV-1 TAX PEPTIDE V7R'''
===STRUCTURE OF HUMAN A6-TCR BOUND TO HLA-A2 COMPLEXED WITH ALTERED HTLV-1 TAX PEPTIDE V7R===




==Overview==
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The interactions of three singly substituted peptide variants of the HTLV-1 Tax peptide bound to HLA-A2 with the A6 T cell receptor have been studied using T cell assays, kinetic and thermodynamic measurements, and X-ray crystallography. The three peptide/MHC ligands include weak agonists and antagonists with different affinities for TCR. The three-dimensional structures of the three A6-TCR/peptide/HLA-A2 complexes are remarkably similar to each other and to the wild-type agonist complex, with minor adjustments at the interface to accommodate the peptide substitutions (P6A, V7R, and Y8A). The lack of correlation between structural changes and the type of T cell signals induced provides direct evidence that different signals are not generated by different ligand-induced conformational changes in the alphabeta TCR.
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{{ABSTRACT_PUBMED_10435578}}


==About this Structure==
==About this Structure==
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[[Category: Human t cell receptor]]
[[Category: Human t cell receptor]]
[[Category: Tcr/peptide/mhc complex]]
[[Category: Tcr/peptide/mhc complex]]
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