作者: Didier Rognan , Anette Stryhn , Lars Fugger , Stig Lyngbæk , Jan Engberg
关键词: Receptor 、 Homology modeling 、 Docking (molecular) 、 Genetics 、 Biology 、 Protein structure 、 T-cell receptor 、 Peptide sequence 、 Computational biology 、 T cell 、 Major histocompatibility complex
摘要: A three-dimensional model of the complex between an Influenza Hemagglutinin peptide, Ha255-262, and its restricting element, mouse major histocompatibility (MHC) class I molecule, Kk, was built by homology modeling subsequently refined simulated annealing restrained molecular dynamics. Next, models two different T cell receptors (TCRs) both specific for Ha255-262/Kk were generated based on previously published TCR X-ray structures. Finally, guided recently structures ternary TCR/peptide/MHC-I complexes, successfully docked into model. We have used a systematic exhaustive panel 144 single amino acid substituted analogs to analyze MHC binding recognition parental viral peptide. This large body experimental data evaluate models. They found account well experimentally obtained data, lending considerable support proposed suggesting universal docking mode alpha beta TCRs MHC-peptide complexes. Such may also be useful in guiding future rational experimentation.