Identification of immunogenic regions in human thyrotropin receptor for immunoglobulin G of patients with Graves' disease.
To identify immunogenic regions in human thyrotropin (TSH) receptor for immunoglobulin G (IgG) of patients with Graves' disease, seven different peptides (each consisting of 14-29 residues long) corresponding to segments of the extracellular domain of the receptor were synthesized. Graves' sera and IgG significantly bound to two out of seven peptides (the amino acid sequence of peptide #1, HQEEDFRVTCKDIQRIPSLPPSTQT; that of peptide #5, LRQRKSVNALNSPLHQEYEENLGDSIVGY). The present data indicate the characteristic existence of immunogenic regions in human TSH receptor for IgG of patients with Graves' disease.
First Department of Internal Medicine, Gunma University, School of Medicine, Maebashi, Japan.
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M
Murakami
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M
Mori
D000595:Amino Acid Sequence; D001323:Autoantibodies / Q000276:immunology*; D004306:Dose-Response Relationship, Immunologic; D000939:Epitopes; D006111:Graves Disease / Q000276:immunology*; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D008969:Molecular Sequence Data; D010455:Peptides / Q000138:chemical synthesis / Q000276:immunology; D011233:Precipitin Tests; D011989:Receptors, Thyrotropin / Q000276:immunology*
D001323:Autoantibodies; D000939:Epitopes; D007074:Immunoglobulin G; D010455:Peptides; D011989:Receptors, Thyrotropin