PMID: 11606121Oct 19, 2001Paper

Toward the quantitative prediction of T-cell epitopes: coMFA and coMSIA studies of peptides with affinity for the class I MHC molecule HLA-A*0201

Journal of Medicinal Chemistry
Irini A Doytchinova, Darren R Flower

Abstract

A set of 102 peptides with affinity for the class I MHC HLA-A0201 molecule was subjected to three-dimensional quantitative structure-affinity relationship (3D QSAR) studies using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA). A test set of 50 peptides was used to determine the predictive value of the models. The CoMFA models gave q(2) and r(2)pred below 0.5. The best CoMSIA model has q(2) = 0.542 and r(2)pred = 0.679, and includes hydrophobic, steric, and H-bond donor fields. The hydrophobic interactions play a dominant role in peptide-MHC molecule binding. CoMSIA coefficient contour maps were used to analyze the structural features of the peptides accounting for the affinity in terms of the three positively contributing physicochemical properties: local hydrophobicity, steric bulk and hydrogen-bond-donor ability.

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Citations

Dec 20, 2007·Immunogenetics·Oleksiy KarpenkoYang Dai
Jan 26, 2008·Journal of Computer-aided Molecular Design·Jitender VermaEvans C Coutinho
Apr 12, 2007·Journal of Biosciences·Manoj Bhasin, G P S Raghava
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Apr 26, 2003·Bioorganic & Medicinal Chemistry·Pingping GuanDarren R Flower
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Jun 18, 2002·Immunology and Cell Biology·Irini A Doytchinova, Darren R Flower
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